Users may be unable to connect to multiple Microsoft 365 services

Update timeline

1. investigating Nov 12, 2026, 06:10 PM UTC

   User impact: Users may be unable to connect to their mailboxes in Exchange Online through multiple connection methods. More info: Potentially impacted connection methods may include: - Outlook on the web - Messaging API (MAPI) - Exchange ActiveSync (EAS) - Representational State Transfer (REST) API Current status: We’ve identified connectivity errors occurring on a portion of Exchange Online infrastructure which receives and processes users’ access requests. We’ve collected networking logs to review to further investigate the source of these errors and confirm our next steps. Scope of impact: This issue may affect users attempting to access their mailbox in Exchange Online using the affected connection methods. Next update by: Thursday, November 12, 2026, at 8:00 PM UTC

2. investigating Nov 12, 2026, 06:32 PM UTC

   Title: Users may be unable to connect to multiple Microsoft 365 services User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR Current status: We’re investigating an issue impacting multiple Microsoft 365 services and we've determined the affected infrastructure is experiencing elevated load across multiple regions, which is likely contributing to the connectivity errors. We're restarting and repairing impacted portions of this infrastructure to restore capacity, and reviewing an unexpected increase in a specific type of service traffic to determine whether it's contributing to the elevated load. In parallel, we're evaluating options to redirect traffic to alternate infrastructure to expedite relief. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 8:30 PM UTC

3. investigating Nov 12, 2026, 06:59 PM UTC

   User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR Current status: We've completed redistributing connection traffic across our worldwide infrastructure, and we're moving additional traffic off the affected infrastructure to further reduce load. We're also restarting affected servers to return them to service. In parallel, we're investigating whether the elevated traffic reflects a genuine increase in requests or a shift in how traffic is being routed across our infrastructure. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 9:00 PM UTC

4. investigating Nov 12, 2026, 07:16 PM UTC

   User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR Current status: We're aggressively pursuing all pathways to reduce impact. As a precaution, we've paused all deployments and configuration changes while we review recent changes for any correlation to this event. We've also moved traffic for some services off the affected infrastructure to further reduce load, with additional traffic moves in progress. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 9:00 PM UTC

5. investigating Nov 12, 2026, 07:30 PM UTC

   User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR Current status: We're aggressively pursuing all pathways to reduce impact. As a precaution, we've paused all deployments and configuration changes while we review recent changes for any correlation to this event. We've determined that the elevated load isn't driven by an overall increase in traffic, but by a large number of servers being unexpectedly unavailable, which is shifting load onto the remaining infrastructure. We're investigating what's causing these servers to become unavailable while we work to safely return them to service. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 10:00 PM UTC

6. investigating Nov 12, 2026, 08:32 PM UTC

   User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR - Microsoft Planner - Microsoft To Do Current status: While we haven't identified any recent changes that correlate with the start of impact, our investigation indicates the failed health checks may originate from a specific component on the affected servers that's responsible for processing them. We're deploying a targeted change to bypass this component on a subset of servers to validate whether this restores availability, and we've taken steps to prevent additional servers from being removed from service while we work to return the affected servers to service. We're also investigating why affected servers are experiencing elevated processor usage while handling requests. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 9:30 PM UTC

7. investigating Nov 12, 2026, 08:44 PM UTC

   User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR - Microsoft Planner - Microsoft To Do Current status: While validating the targeted change, we found that many of the affected servers have become unresponsive, which is preventing us from confirming whether the change is effective. We're restarting these servers so they can come back online with the change in place, and we're applying the same approach to additional affected portions of our infrastructure to validate the results more broadly. Previous Status: While we haven't identified any recent changes that correlate with the start of impact, our investigation indicates the failed health checks may originate from a specific component on the affected servers that's responsible for processing them. We're deploying a targeted change to bypass this component on a subset of servers to validate whether this restores availability, and we've taken steps to prevent additional servers from being removed from service while we work to return the affected servers to service. We're also investigating why affected servers are experiencing elevated processor usage while handling requests. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 9:30 PM UTC

8. investigating Nov 12, 2026, 09:01 PM UTC

   User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR - Microsoft Planner - Microsoft To Do - Microsoft Purview: Multiple Purview services including Authorization, Auto Labelling, Data Loss Prevention (DLP), Communication Compliance, and Data Classification are impacted. Current status: We've validated an alternative health check method on a subset of affected infrastructure, which allowed the servers in that subset to successfully return to service, and we're now applying this change more broadly. We're also preparing an automated recovery process to continually detect and restart unresponsive servers, to help keep them in service while this change progresses. Additionally, our review of recent changes has identified a small number of configuration updates that we're investigating as potential contributors to the issue. Previous status: While validating the targeted change, we found that many of the affected servers have become unresponsive, which is preventing us from confirming whether the change is effective. We're restarting these servers so they can come back online with the change in place, and we're applying the same approach to additional affected portions of our infrastructure to validate the results more broadly. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 10:30 PM UTC

9. investigating Nov 12, 2026, 09:41 PM UTC

   User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR - Microsoft Planner - Microsoft To Do - Microsoft Intune - Microsoft Defender for Office 365 - Microsoft Purview: Multiple Purview services including Authorization, Auto Labelling, Data Loss Prevention (DLP), Communication Compliance, and Data Classification are impacted. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. Current status: We're continuing to work through restarting and validating the affected servers to safely return them to service, and we're exploring opportunities to expedite this process. In parallel, we're assessing whether reverting the small number of recent configuration updates we identified could help accelerate recovery. Previous status: We've validated an alternative health check method on a subset of affected infrastructure, which allowed the servers in that subset to successfully return to service, and we're now applying this change more broadly. We're also preparing an automated recovery process to continually detect and restart unresponsive servers, to help keep them in service while this change progresses. Additionally, our review of recent changes has identified a small number of configuration updates that we're investigating as potential contributors to the issue. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 10:30 PM UTC

10. investigating Nov 12, 2026, 10:11 PM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR - Microsoft Planner - Microsoft To Do - Microsoft Intune - Microsoft Defender for Office 365 - Microsoft Purview: Multiple Purview services including Authorization, Auto Labelling, Data Loss Prevention (DLP), Communication Compliance, and Data Classification are impacted. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory. Current status: We’re continuing to pursue all available pathways to restore service, as our actions taken thus far have not provided the anticipated relief. Our investigation has found that a core process on the affected servers is becoming overwhelmed, which causes the servers to stop responding and contributes to the capacity loss. To validate a potential recovery approach, we're fully isolating a portion of our service infrastructure, restarting the affected components, and gradually reintroducing traffic to confirm our services remain stable before applying this approach more broadly. We're also analyzing traffic patterns across our entire service infrastructure and evaluating whether isolating traffic within each region may allow affected regions to recover independently. Previous status: We're continuing to work through restarting and validating the affected servers to safely return them to service, and we're exploring opportunities to expedite this process. In parallel, we're assessing whether reverting the small number of recent configuration updates we identified could help accelerate recovery. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Thursday, November 12, 2026, at 11:30 PM UTC

11. investigating Nov 12, 2026, 11:06 PM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR - Microsoft Planner - Microsoft To Do - Microsoft Intune - Microsoft Defender for Office 365 - Microsoft Purview: Multiple Purview services including Authorization, Auto Labelling, Data Loss Prevention (DLP), Communication Compliance, and Data Classification are impacted. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory. - Universal Print: Users may encounter errors submitting print jobs or using admin features. Current status: We've begun returning a portion of the affected servers to service, and they're remaining stable so far. We’ve also shifted traffic and connections to alternative pathways wherever possible and have observed limited recovery in some regions. We've streamlined our recovery process to expedite returning the remaining affected servers to service. To further support recovery, we're implementing protective traffic management measures in a specific location to reduce load on the affected infrastructure, and we'll expand these measures to additional locations if we observe positive results. As capacity is restored, users may experience a gradual recovery as their clients reconnect to the service. Previous status: We’re continuing to pursue all available pathways to restore service, as our actions taken thus far have not provided the anticipated relief. Our investigation has found that a core process on the affected servers is becoming overwhelmed, which causes the servers to stop responding and contributes to the capacity loss. To validate a potential recovery approach, we're fully isolating a portion of our service infrastructure, restarting the affected components, and gradually reintroducing traffic to confirm our services remain stable before applying this approach more broadly. We're also analyzing traffic patterns across our entire service infrastructure and evaluating whether isolating traffic within each region may allow affected regions to recover independently. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 12:30 AM UTC

12. investigating Nov 13, 2026, 12:08 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR - Microsoft Planner - Microsoft To Do - Microsoft Intune - Microsoft Defender for Office 365 - Microsoft Purview: Multiple Purview services including Authorization, Auto Labelling, Data Loss Prevention (DLP), Communication Compliance, and Data Classification are impacted. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: While the servers we've returned to service initially remain healthy, we've observed that they can become unresponsive again once they begin receiving traffic. We're analyzing diagnostic data from these servers with our networking and platform experts to determine what's triggering this behavior. Building on the protective traffic management measures we've implemented, we're also temporarily limiting which types of traffic can reach the affected infrastructure in specific locations. This will help us determine whether a particular type of request is contributing to the impact and allow us to restore service incrementally. Additionally, we're rebuilding a subset of affected servers using a previous software configuration to validate whether this prevents them from becoming unresponsive, and we'll expand this approach to additional servers if we observe positive results. Previous status: We've begun returning a portion of the affected servers to service, and they're remaining stable so far. We’ve also shifted traffic and connections to alternative pathways wherever possible and have observed limited recovery in some regions. We've streamlined our recovery process to expedite returning the remaining affected servers to service. To further support recovery, we're implementing protective traffic management measures in a specific location to reduce load on the affected infrastructure, and we'll expand these measures to additional locations if we observe positive results. As capacity is restored, users may experience a gradual recovery as their clients reconnect to the service. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 1:30 AM UTC

13. investigating Nov 13, 2026, 12:56 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. -Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Safe Links may be unable to verify URLs, which may impact users clicking links in Outlook and Teams. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, or when updating artifacts with sensitivity labels. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out. - Microsoft Intune - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP), Communication Compliance, and Data Classification are impacted, and users may be unable to load Microsoft Purview portal pages. - Microsoft Teams: Scenarios that depend on Exchange Online, including calendar, meeting scheduling, and creating chats for organizations using Information Barriers, may fail. Core messaging and online meetings remain largely functional. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We've reviewed known impact scenarios and have revised the list of impact services and features, which can be viewed in the "more info" section of this communication. We're continuing our work to isolate the issue affecting server availability, as well as other workstreams. Previous status: While the servers we've returned to service initially remain healthy, we've observed that they can become unresponsive again once they begin receiving traffic. We're analyzing diagnostic data from these servers with our networking and platform experts to determine what's triggering this behavior. Building on the protective traffic management measures we've implemented, we're also temporarily limiting which types of traffic can reach the affected infrastructure in specific locations. This will help us determine whether a particular type of request is contributing to the impact and allow us to restore service incrementally. Additionally, we're rebuilding a subset of affected servers using a previous software configuration to validate whether this prevents them from becoming unresponsive, and we'll expand this approach to additional servers if we observe positive results. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 1:30 AM UTC

14. investigating Nov 13, 2026, 01:06 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. -Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Safe Links may be unable to verify URLs, which may impact users clicking links in Outlook and Teams. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, or when updating artifacts with sensitivity labels. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out. - Microsoft Intune - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP), Communication Compliance, and Data Classification are impacted, and users may be unable to load Microsoft Purview portal pages. - Microsoft Teams: Scenarios that depend on Exchange Online, including calendar, meeting scheduling, and creating chats for organizations using Information Barriers, may fail. Core messaging and online meetings remain largely functional. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: Our investigation has found that a process on the affected servers responsible for establishing secure connections becomes overwhelmed, causing the servers to stop processing requests. We're preparing a configuration change to address this behavior that can be applied across all affected servers, and we're validating it on a subset of servers before applying it more broadly alongside restarts of the affected infrastructure. In parallel, we've begun reverting a recent network configuration change that correlates with the start of impact and are monitoring to determine whether this contributes to recovery. The temporary traffic limitations we previously described are now in effect in specific locations. We're monitoring the affected servers in those locations to confirm whether they remain stable while handling a narrower set of connections, after which we'll gradually reintroduce additional traffic. Previous status: We've reviewed known impact scenarios and have revised the list of impact services and features, which can be viewed in the "more info" section of this communication. We're continuing our work to isolate the issue affecting server availability, as well as other workstreams. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 2:00 AM UTC

15. investigating Nov 13, 2026, 01:50 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. -Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Safe Links may be unable to verify URLs, which may impact users clicking links in Outlook and Teams. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, or when updating artifacts with sensitivity labels. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out. - Microsoft Intune - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP), Communication Compliance, and Data Classification are impacted, and users may be unable to load Microsoft Purview portal pages. - Microsoft Teams: Scenarios that depend on Exchange Online, including calendar, meeting scheduling, and creating chats for organizations using Information Barriers, may fail. Core messaging and online meetings remain largely functional. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We’re seeing positive results with our efforts to restart affected infrastructure. We’re actively monitoring the performance of these to verify stability which will support improved availability. Remediation actions will be expanded as we confirm stability with the changes applied. Previous status: Our investigation has found that a process on the affected servers responsible for establishing secure connections becomes overwhelmed, causing the servers to stop processing requests. We're preparing a configuration change to address this behavior that can be applied across all affected servers, and we're validating it on a subset of servers before applying it more broadly alongside restarts of the affected infrastructure. In parallel, we've begun reverting a recent network configuration change that correlates with the start of impact and are monitoring to determine whether this contributes to recovery. The temporary traffic limitations we previously described are now in effect in specific locations. We're monitoring the affected servers in those locations to confirm whether they remain stable while handling a narrower set of connections, after which we'll gradually reintroduce additional traffic. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 3:00 AM UTC

16. investigating Nov 13, 2026, 02:14 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Safe Links may be unable to verify URLs, which may impact users clicking links in Outlook and Teams. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out. - Microsoft Intune - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP), Communication Compliance, and Data Classification are impacted, and users may be unable to load Microsoft Purview portal pages. - Microsoft Teams: Scenarios that depend on Exchange Online, including calendar, meeting scheduling, and creating chats for organizations using Information Barriers, may fail. Core messaging and online meetings remain largely functional. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We’re applying infrastructure capacity improvements where possible in an effort to help support traffic in regions coming online. We’re continuing to monitor the results of changes applied so we can identify strategic actions that can help to improve service health across all affected regions. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 3:00 AM UTC

17. investigating Nov 13, 2026, 03:07 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Safe Links may be unable to verify URLs, which may impact users clicking links in Outlook and Teams. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We’ve monitored the status of the changes applied to improve serviceability and confirmed that change is not taking as expected. We’re identifying alternate workstreams that can be applied to increase capacity in the face of sustained traffic management imbalances. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 3:30 AM UTC

18. investigating Nov 13, 2026, 03:37 AM UTC

    More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Safe Links may be unable to verify URLs, which may impact users clicking links in Outlook and Teams. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: As part of our investigation into the sustained traffic management imbalances, we’re reviewing traffic flows and affected infrastructure to identify opportunities to optimize routing. This includes verifying the reasons for service failures so we can develop specific actions to improve stability. Previous status: We’ve monitored the status of the changes applied to improve serviceability and confirmed that change is not taking as expected. We’re identifying alternate workstreams that can be applied to increase capacity in the face of sustained traffic management imbalances. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 4:30 AM UTC

19. investigating Nov 13, 2026, 04:11 AM UTC

    More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Safe Links may be unable to verify URLs, which may impact users clicking links in Outlook and Teams. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: As part of our investigation into the sustained traffic management imbalances, we’re reviewing traffic flows and affected infrastructure to identify opportunities to optimize routing. This includes verifying the reasons for service failures so we can develop specific actions to improve stability. We will continue to share more information as soon as we have it, and for now we can confirm that there is no indication this is the result of malicious activity. We’ll continue to apply learnings towards remediation actions as we confirm effectiveness mitigation actions. Previous status: We’ve monitored the status of the changes applied to improve serviceability and confirmed that change is not taking as expected. We’re identifying alternate workstreams that can be applied to increase capacity in the face of sustained traffic management imbalances. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 4:30 AM UTC

20. investigating Nov 13, 2026, 04:22 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Failures may occur for scenarios including access to Safe Links, Safe Attachments, protection and submission policies, and attempts to view Quarantine, Threat Explorer, and Email remediation events. Additionally, delays may occur for Tenant Allow / Block list changes, unified Role-Based Access Control, reporting, message traces, content extraction, and outbound protection. Users clicking on wrapped/rewritten URLs typically processed by Safe Links will result in a failure to navigate, as Safe Links fails to process it. Users who are able to successfully access the Quarantine portal may encounter failures when attempting to release items from quarantine. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We’re continuing our efforts to improve server stability to improve traffic flow. This includes adjusting traffic protocols, redistributing traffic, and applying strategic traffic blocking measures. We're observing partial recovery across regions in which we've applied these adjustments; however, these actions aren't resulting in sustained recovery, so we're reviewing what additional actions we can take to improve overall infrastructure stability. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 5:00 AM UTC

21. investigating Nov 13, 2026, 04:57 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Failures may occur for scenarios including access to Safe Links, Safe Attachments, protection and submission policies, and attempts to view Quarantine, Threat Explorer, and Email remediation events. Additionally, delays may occur for Tenant Allow / Block list changes, unified Role-Based Access Control, reporting, message traces, content extraction, and outbound protection. Users clicking on wrapped/rewritten URLs typically processed by Safe Links will result in a failure to navigate, as Safe Links fails to process it. Users who are able to successfully access the Quarantine portal may encounter failures when attempting to release items from quarantine. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We appreciate your organization’s patience and understanding while we work with urgency to resolve this incident. As we’ve applied our current ongoing mitigation actions, we’ve observed a surge in outbound call volume from our routing services to our backend servers. This occurs when the backend servers outbound service cannot properly route to the backend machines. We’re continuing to observe heightened volume due to traffic rebalancing actions that we have taken throughout this event. We’re working on multiple workstreams to pinpoint the underlying cause of this traffic influx and address it. Current actions we are taking include scaling up virtual machines to increase capacity and reduce load. Additionally, we’re querying for machines in a bad state to perform a force sync for our recent network change, which may improve service availability. However, we are encountering issues with the machines being stuck in a bad state, preventing our changes from syncing as expected. We’ll continue to monitor the effectiveness of changes applied so we can determine what refinements are necessary. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 6:00 AM UTC

22. investigating Nov 13, 2026, 05:46 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Failures may occur for scenarios including access to Safe Links, Safe Attachments, protection and submission policies, and attempts to view Quarantine, Threat Explorer, and Email remediation events. Additionally, delays may occur for Tenant Allow / Block list changes, unified Role-Based Access Control, reporting, message traces, content extraction, and outbound protection. Users clicking on wrapped/rewritten URLs typically processed by Safe Links will result in a failure to navigate, as Safe Links fails to process it. Users who are able to successfully access the Quarantine portal may encounter failures when attempting to release items from quarantine. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We’re continuing to pursue multiple workstreams to pinpoint the underlying cause of the traffic influx and advance the recoverability of the backend servers. We’re taking a measured approach to identify and repair affected infrastructure to improve the ability to confirm the developed changes were applied. We’re tracking the results of this approach to verify the servers are showing the anticipated recovery and performance intended. As of now, we are not aware of any malicious activity that is causing this incident. We will continue to treat this incident with urgency and priority until full resolution. Once mitigated, we will provide full details of the root cause, defense-in-depth repair items, and more within a Post-Incident Report. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 7:00 AM UTC

23. investigating Nov 13, 2026, 06:17 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Failures may occur for scenarios including access to Safe Links, Safe Attachments, protection and submission policies, and attempts to view Quarantine, Threat Explorer, and Email remediation events. Additionally, delays may occur for Tenant Allow / Block list changes, unified Role-Based Access Control, reporting, message traces, content extraction, and outbound protection. Users clicking on wrapped/rewritten URLs typically processed by Safe Links will result in a failure to navigate, as Safe Links fails to process it. Users who are able to successfully access the Quarantine portal may encounter failures when attempting to release items from quarantine. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: As part of our ongoing efforts to advance the recoverability of our frontend servers, we’re evaluating traffic controls that can be applied to increase capacity and stability. This includes traffic optimization actions such as traffic throttling, protocol adjustments, and failover routing intended to improve stability in active regions. In parallel, were expanding internal testing to track activity within a contained environment to improve traffic monitoring and issue detection capabilities. As of now, we are not aware of any malicious activity that is causing this incident. We will continue to treat this incident with urgency and priority until full resolution. Once mitigated, we will provide full details of the root cause, defense-in-depth repair items, and more within a Post-Incident Report. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 7:00 AM UTC

24. investigating Nov 13, 2026, 06:57 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Failures may occur for scenarios including access to Safe Links, Safe Attachments, protection and submission policies, and attempts to view Quarantine, Threat Explorer, and Email remediation events. Additionally, delays may occur for Tenant Allow / Block list changes, unified Role-Based Access Control, reporting, message traces, content extraction, and outbound protection. Users clicking on wrapped/rewritten URLs typically processed by Safe Links will result in a failure to navigate, as Safe Links fails to process it. Users who are able to successfully access the Quarantine portal may encounter failures when attempting to release items from quarantine. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We’re continuing to monitor activity across regions to evaluate server status and determine actions that can be taken to improve capacity. This includes reviewing server performance and confirming that developed patches have been applied and working as intended after infrastructure reboots are completed. At this point, we have observed marginal success. In parallel, we’re taking action to expand capacity through the utilization of Virtual Machines. As of now, we are not aware of any malicious activity that is causing this incident. We will continue to treat this incident with urgency and priority until full resolution. Once mitigated, we will provide full details of the root cause, defense-in-depth repair items, and more within a Post-Incident Report. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 7:30 AM UTC

25. investigating Nov 13, 2026, 07:29 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Failures may occur for scenarios including access to Safe Links, Safe Attachments, protection and submission policies, and attempts to view Quarantine, Threat Explorer, and Email remediation events. Additionally, delays may occur for Tenant Allow / Block list changes, unified Role-Based Access Control, reporting, message traces, content extraction, and outbound protection. Users clicking on wrapped/rewritten URLs typically processed by Safe Links will result in a failure to navigate, as Safe Links fails to process it. Users who are able to successfully access the Quarantine portal may encounter failures when attempting to release items from quarantine. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We’re seeing positive results for server stability after applying an upstream authentication/routing configuration component patch to a portion of our infrastructure. We’ll continue to monitor its progress and are working to expand it to servers supporting active regions coming online. As of now, we are not aware of any malicious activity that is causing this incident. We will continue to treat this incident with urgency and priority until full resolution. Once mitigated, we will provide full details of the root cause, defense-in-depth repair items, and more within a Post-Incident Report. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 8:30 AM UTC

26. investigating Nov 13, 2026, 09:10 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed.- Microsoft 365 admin center: Admins may be unable to load some admin center pages.- Microsoft 365 apps: Users may be unable to view their recently used files.- Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected.- Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted.- Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files.- Microsoft Defender for Office 365: Failures may occur for scenarios including access to Safe Links, Safe Attachments, protection and submission policies, and attempts to view Quarantine, Threat Explorer, and Email remediation events. Additionally, delays may occur for Tenant Allow / Block list changes, unified Role-Based Access Control, reporting, message traces, content extraction, and outbound protection. Users clicking on wrapped/rewritten URLs typically processed by Safe Links will result in a failure to navigate, as Safe Links fails to process it. Users who are able to successfully access the Quarantine portal may encounter failures when attempting to release items from quarantine.- Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs.- Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it.- Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API.- Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted.- Microsoft Planner: Users are experiencing Plan and Task operation reliability issues.- Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing.- Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted.- Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures.- Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI.- SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional.- Universal Print: Users may encounter errors submitting print jobs or using admin features.- Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: Recovery efforts are ongoing across impacted infrastructure. We are seeing early signs of stabilization, but service capacity has not yet returned to normal levels and health remains variable as traffic is carefully reintroduced.Our primary mitigation path continues to focus on service stability and controlled recovery. Engineering teams are cycling affected infrastructure through traffic drain, restart, remediation, and staged return-to-service while monitoring closely. We are also evaluating additional mitigation options to improve recovery speed and consistency. Network and traffic-management actions remain in progress, and we continue to prioritize backlog and queue health to preserve delayed mail during recovery. As part of this effort, we are extending the email timeout window to 48 hours to help protect delayed messages while service recovery continues. At this time, we are not aware of any malicious activity causing this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after recovery is complete. Next update by: Friday, November 13, 2026, at 10:00 AM UTC

27. investigating Nov 13, 2026, 09:14 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Failures may occur for scenarios including access to Safe Links, Safe Attachments, protection and submission policies, and attempts to view Quarantine, Threat Explorer, and Email remediation events. Additionally, delays may occur for Tenant Allow / Block list changes, unified Role-Based Access Control, reporting, message traces, content extraction, and outbound protection. Users clicking on wrapped/rewritten URLs typically processed by Safe Links will result in a failure to navigate, as Safe Links fails to process it. Users who are able to successfully access the Quarantine portal may encounter failures when attempting to release items from quarantine. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: Recovery efforts are ongoing across impacted infrastructure. We are seeing early signs of stabilization, but service capacity has not yet returned to normal levels and health remains variable as traffic is carefully reintroduced.Our primary mitigation path continues to focus on service stability and controlled recovery. Engineering teams are cycling affected infrastructure through traffic drain, restart, remediation, and staged return-to-service while monitoring closely. We are also evaluating additional mitigation options to improve recovery speed and consistency. Network and traffic-management actions remain in progress, and we continue to prioritize backlog and queue health to preserve delayed mail during recovery. As part of this effort, we are extending the email timeout window to 48 hours to help protect delayed messages while service recovery continues. At this time, we are not aware of any malicious activity causing this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after recovery is complete. Next update by: Friday, November 13, 2026, at 10:00 AM UTC

28. investigating Nov 13, 2026, 10:01 AM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: Recovery actions are ongoing and have progressed in phases across affected Microsoft 365 infrastructure. Global telemetry and customer reports show incremental improvement in several workloads; however, service health remains variable and capacity has not yet fully returned to baseline. Network and traffic-management actions remain active. To protect email during recovery, we’re continuing to prioritize queue and backlog processing, and the email timeout window has been extended to 48 hours to preserve delayed messages. At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete. Next update by: Friday, November 13, 2026, at 11:00 AM UTC

29. investigating Nov 13, 2026, 11:03 AM UTC

    More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We've made additional progress toward service recovery, with recovery actions completed across portions of the affected infrastructure in the Asia Pacific region. Traffic is being gradually restored, and we're seeing improvements in key customer scenarios, including mailbox access and delayed email processing. However, some users may continue to experience intermittent issues. Our focus is now on extending these recovery actions across affected infrastructure in other regions, while continuing stabilization efforts and adding supporting capacity to improve service consistency. Reducing email queues and backlogs remains a priority, and the extended 48-hour email timeout window remains in place to help protect delayed messages as delivery catches up. At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 12:00 PM UTC

30. investigating Nov 13, 2026, 11:04 AM UTC

    More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We've made additional progress toward service recovery, with recovery actions completed across portions of the affected infrastructure in the Asia Pacific region. Traffic is being gradually restored, and we're seeing improvements in key customer scenarios, including mailbox access and delayed email processing. However, some users may continue to experience intermittent issues. Our focus is now on extending these recovery actions across affected infrastructure in other regions, while continuing stabilization efforts and adding supporting capacity to improve service consistency. Reducing email queues and backlogs remains a priority, and the extended 48-hour email timeout window remains in place to help protect delayed messages as delivery catches up. At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 12:00 PM UTC

31. investigating Nov 13, 2026, 12:00 PM UTC

    More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current status: We’re seeing encouraging recovery progress in Europe, with service availability and email delivery performance improving across a growing portion of affected Microsoft 365 infrastructure. Japan remains comparatively more stable, while North America is also improving; however, some users may still experience intermittent issues as recovery actions continue. We're focused on addressing the remaining areas of disruption and improving service consistency across affected regions. Reducing email queues and backlogs remains a priority, and the extended 48-hour email timeout window remains in place to help protect delayed messages as delivery catches up. At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 1:00 PM UTC

32. investigating Nov 13, 2026, 12:58 PM UTC

    User impact: Users may be unable to connect to multiple Microsoft 365 services. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current Status: We're seeing continued recovery progress across affected regions, with broader improvements now observed in North America and sustained improvements across much of Europe. We're also seeing encouraging recovery signals in Asia Pacific, although some users may continue to experience intermittent access issues or delayed email delivery as mitigation progresses across the remaining affected infrastructure. Our focus remains on stabilizing recovered infrastructure, completing mitigation in the remaining impacted areas, and reducing delayed email queues and backlogs. We're closely monitoring service consistency and validating recovery across different connection methods as we work toward full mitigation. At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 2:00 PM UTC

33. investigating Nov 13, 2026, 02:00 PM UTC

    More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current Status: We're continuing to see improvements in service availability, with email queues significantly reduced and approaching normal levels. Some users may still experience intermittent access issues or delayed email delivery as recovery continues. We've implemented additional mitigation measures and are restoring the remaining affected infrastructure while investigating residual service issues. We're closely monitoring service health and validating recovery across affected connection methods to ensure sustained service stability. At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 3:00 PM UTC

34. investigating Nov 13, 2026, 02:56 PM UTC

    More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current Status: We're observing sustained improvements in service availability as recovery progresses across affected Microsoft 365 services. While service functionality continues to improve, some users may still experience intermittent connectivity issues or delayed email delivery. Our efforts are increasingly focused on resolving the remaining issues and restoring consistent service for all affected users. We're validating recovery across different connection methods and monitoring service stability to confirm that improvements are sustained. At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 4:00 PM UTC

35. investigating Nov 13, 2026, 03:56 PM UTC

    More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Current Status: Current status: We remain focused on addressing residual impact and ensuring reliable service restoration. We continue to assess recovery across various connection methods and are closely monitoring service health to verify sustained stability. At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 6:00 PM UTC

36. investigating Nov 13, 2026, 04:07 PM UTC

    Current status: We remain focused on addressing residual impact and ensuring reliable service restoration. We continue to assess recovery across various connection methods and are closely monitoring service health to verify sustained stability. At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 6:00 PM UTC

37. investigating Nov 13, 2026, 05:57 PM UTC

    Current status: We are deeply sorry for the disruption this incident has caused you and your business. We know the trust you place in our services and take that responsibility extremely seriously. We are seeing broad recovery and stability across our services. This was a technical issue not related to cyber or AI / agents. The incident was introduced by an issue during an earlier network capacity upgrade that surfaced following a recent network change. We have addressed the underlying issue and continue to restore service to remaining customers and regions. Given the scale of demand, we restored services gradually, validating stability at each stage. While this took longer, it helped ensure a stable restoration. We will provide a full post-incident report once our review is complete. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Friday, November 13, 2026, at 8:00 PM UTC

38. investigating Nov 13, 2026, 08:02 PM UTC

    Current status: As infrastructure stabilizes, we're still draining queued messages and rebalancing traffic, so customers may see improved sign-in/access while delivery and processing continue to catch up. We do not have an ETA for full recovery yet. Service access can recover before mail flow fully normalizes. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Saturday, November 14, 2026, at 12:00 AM UTC

39. investigating Nov 13, 2026, 10:00 PM UTC

    Current status: We continue to observe sustained service recovery across the previously affected environments. Due to the severity of impact this incident caused, we're monitoring for an extended period to ensure no additional mitigative actions are required. In parallel, we're monitoring the backlog of email messages accrued during this event to ensure all process successfully before considering the issue resolved. We're addressing all impact scenarios for dependent and related Microsoft 365 products as listed in the "More info" section below, and believe the majority of those impacted scenarios have been addressed. More info: Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional. - Exchange Online: Users may be unable to access their mailbox using Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync (EAS), or REST-based connections, and email delivery may be delayed. - Microsoft 365 admin center: Admins may be unable to load some admin center pages. - Microsoft 365 apps: Users may be unable to view their recently used files. - Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory are affected. - Microsoft 365 Education: Features including Assignments, Reading Progress, and Speaker Progress may be impacted. - Microsoft Copilot 365: Users may be unable to load Copilot Chat or receive responses in the web and desktop apps, and Copilot experiences may be unable to access work data such as email, calendar, and files. - Microsoft Defender for Office 365: Some Defender for Office 365 experiences that rely on Purview DLP/Information Protection signals may experience delays or failures in policy evaluation and governance action enforcement. Admins/SOCs may experience delays or failures when accessing NHI features that rely on Data Classification Sensitivity Labels, including Tenant Metrics, Policy, and Data Usage, across the Identity, OAuth, and App Governance pages in the Security portal on Microsoft Defender for Cloud Apps. - Microsoft Defender XDR: Users may be unable to load Microsoft Defender portal pages or solution tabs. - Microsoft Fabric: Users may encounter failures when exporting reports with sensitivity labels to PDF or PowerPoint, when updating artifacts with sensitivity labels, or opening pbix with sensitivity label in Power BI Desktop. As a workaround, users can remove the sensitivity label from the affected item to complete the operation, if their organization's data protection policies allow it. - Microsoft Graph: API requests that access Exchange Online data, such as mail, calendar, and contacts, may time out and prevent users from managing Teams, Channels, Membership, Apps management and send activity notifications using Graph API. - Microsoft Intune: Scenarios including device enrollment, device check-in, and device compliance policies may have been intermittently impacted. - Microsoft Planner: Users are experiencing Plan and Task operation reliability issues. - Microsoft Power Apps: Users may be intermittently unable to sign-in to the Power Apps or Field Service mobile apps. Affected users may be able to utilize Power Apps or Field Service on the web as a way to circumvent impact, and users who are already signed in can potentially avoid impact by not signing out, clearing app data, or reinstalling while the issue is ongoing. - Microsoft Purview: Multiple Purview services including Authorization, auto-labeling, Data Loss Prevention (DLP) across Microsoft 365 services, Communication Compliance, Information Protection label and auto-labeling policies, Role-Based Access Control (RBAC) and Data Classification are impacted, and users may be unable to open or load Microsoft Purview portal pages or protected content. Audit searches, protected content creation, eDiscovery tasks such as search and export, Data Classification and On Demand Scan features may also be impacted. - Microsoft Teams: Most of the core functionality including joining calls, meetings, group chats, and channel messages are not impacted. Scenarios that depend on Exchange Online, including Calendar related failures with scheduling, invites, viewing, and meeting edits. Creation of Live or Virtual events fail. Failures with Copilot responses for outlook, calendar, or M365 files, read history, or adding to new chats. Navigating to App chats, adding new contacts or syncing contacts in settings fail. Standard channels are working fine but users may experience the inability to create or delete private or shared channels. - Microsoft To Do: The app may not load, and users may see operation failures. - Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI. - SharePoint Online: Some users may experience issues when sharing SharePoint Online files with people outside their organization, where external sharing is permitted by both organization-level and site-level settings. Additionally, features that depend on Exchange Online may be impacted. Accessing files stored directly in SharePoint Online remains functional. - Universal Print: Users may encounter errors submitting print jobs or using admin features. - Windows 365: Customers who have configured their tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs. Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services. Next update by: Saturday, November 14, 2026, at 2:30 AM UTC