Unify Office Outage History

Started Jul 28, 2026, 05:15 PM UTC· resolved Jul 29, 2026, 05:18 AM UTC

1. monitoring Jul 28, 2026, 05:15 PM UTC

   User impact: Users may be unable to send new messages in Microsoft Teams Free. Current status: We're reviewing scenario telemetry logs to determine why users may be unable to send messages after a recipient of a new chat request accepts in Microsoft Teams Free. Next update by: Tuesday, July 28, 2026, at 6:30 PM UTC

2. monitoring Jul 28, 2026, 06:26 PM UTC

   User impact: Users may be unable to send new messages in Microsoft Teams Free. Current status: We've identified that the process which should occur when a user accepts a new chat isn't trigger as expected. We're continuing to review the scenario telemetry logs to identify why this process isn't completing to determine the root cause and a strategy that remediates impact. Next update by: Tuesday, July 28, 2026, at 8:30 PM UTC

3. monitoring Jul 28, 2026, 08:29 PM UTC

   User impact: Users may be unable to send new messages in Microsoft Teams Free. Current status: Our review of the scenario telemetry logs is taking longer than anticipated, but we're continuing to make progress in understanding the root cause and developing a strategy that remediates impact. Next update by: Tuesday, July 28, 2026, at 10:30 PM UTC

4. monitoring Jul 29, 2026, 12:01 AM UTC

   User impact: Users may be unable to send new messages in Microsoft Teams Free. Current status: We’ve made changes to improve background processing and confirmed through internal monitoring that the impacted scenario is recovering. We’re continuing to monitor the recovery progress to confirm the issue is fully resolved. Next update by: Wednesday, July 29, 2026, at 10:00 AM UTC

Read the full incident report →

Started Jun 26, 2026, 09:21 PM UTC· resolved Jun 28, 2026, 12:13 AM UTC

1. monitoring Jun 26, 2026, 09:21 PM UTC

   User impact: Users may be unable to access or sign in to Microsoft Teams Free on iOS devices. Current status: We're investigating a potential Microsoft Teams Free issue in which users may be unable to access or sign in to the service on iOS devices and will provide an update in 30 minutes.

Read the full incident report →

Started Jun 25, 2026, 07:00 PM UTC· resolved Jun 27, 2026, 01:16 AM UTC

1. monitoring Jun 26, 2026, 09:49 PM UTC

   User impact: Users may be unable to access or sign in to Microsoft Teams Free on iOS or Android mobile devices. Current status: We've determined that this issue is due to a recent change that included a reference to a deprecated token for mobile devices. We're reverting this offending change to mitigate impact. Start time: Thursday, June 25, 2026, at 7:00 PM UTC Next update by: Saturday, June 27, 2026, at 1:30 AM UTC

2. resolved Jun 27, 2026, 01:16 AM UTC

   User impact: Users may have been unable to access or sign in to Microsoft Teams Free on iOS or Android mobile devices. Final status: We’ve successfully reverted the offending change and confirmed with service telemetry that this issue was resolved by our actions. Start time: Thursday, June 25, 2026, at 7:00 PM UTC End time: Saturday, June 27, 2026, at 1:16 AM UTC This is the final update for the event.

Read the full incident report →

Started Apr 29, 2026, 09:02 PM UTC· resolved May 09, 2026, 04:08 PM UTC

1. monitoring Apr 29, 2026, 09:02 PM UTC

   User impact: iOS and iPadOS users may experience issues accessing Outlook and Hotmail from the iOS default Mail app. More Info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if your account is locked out, you'll need to take multiple actions. First, you'll need to follow guidance in the article: https://support.microsoft.com/en-us/office/ios-ipados-users-may-experience-issues-accessing-their-outlook-and-hotmail-accounts-from-the-ios-ipados-default-mail-app-3584197b-8ffb-46ce-b5c6-f4cc71ff29a7 Next, after you've completed the steps in the above article, you will need to complete the numbered steps below for each impacted device. iOS and iPadOS users must take the following steps to access their accounts on EACH impacted device: 1. Open the Settings app on your iOS/iPadOS device. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to re-enter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS/iPadOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: Our service environment remains healthy, and users should follow the instructions listed in the More info section above for EACH impacted device. We’ve included a link to a support article with guidance should you encounter additional issues. Next update by: Thursday, April 30, 2026, at 10:00 PM UTC

Read the full incident report →

Started Apr 29, 2026, 09:02 PM UTC· resolved Apr 30, 2026, 12:42 AM UTC

1. resolved Apr 27, 2026, 09:57 PM UTC

   User impact: iOS users may experience issues accessing Outlook and Hotmail from the default Mail app. More info: iOS users on iPhones MUST take the following steps to re-enter their password and access their accounts: 1. Open the Settings app on your iPhone. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to reenter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Final status: iOS users MUST take the additional steps listed in the "More info" section above to resolve impact. We’ve confirmed service health has returned to normal and reporting users that have completed the additional steps are now able to access Outlook and Hotmail. We'll keep this post up for 24 hours to ensure users are able to review and take the mitigating actions. Start time: Monday, April 27, 2026, at 8:45 AM UTC End time: Monday, April 27, 2026, at 7:16 PM UTC This is the final update for the event.

2. resolved Apr 28, 2026, 10:44 PM UTC

   User impact: iOS users may experience issues accessing Outlook and Hotmail from the default Mail app. More info: iOS users on iPhones MUST take the following steps to re-enter their password and access their accounts: 1. Open the Settings app on your iPhone. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to reenter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Final status: iOS users MUST take the additional steps listed in the "More info" section above to resolve impact. We’ve confirmed service health has returned to normal and reporting users that have completed the additional steps are now able to access Outlook and Hotmail. Start time: Monday, April 27, 2026, at 8:45 AM UTC End time: Monday, April 27, 2026, at 7:16 PM UTC This is the final update for the event.

3. monitoring Apr 29, 2026, 09:02 PM UTC

   User impact: iOS users may experience issues accessing Outlook and Hotmail from the default Mail app. More Info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if your account is locked out, please follow the corresponding article above to resolve that issue. iOS users on iPhones must take the following steps to access their accounts: 1. Open the Settings app on your iPhone. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to re-enter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Reset a forgotten Microsoft account password https://support.microsoft.com/en-us/account-billing/reset-a-forgotten-microsoft-account-password-eff4f067-5042-c1a3-fe72-b04d60556c37 Microsoft account has been locked https://support.microsoft.com/en-us/account-billing/microsoft-account-has-been-locked-805e8b0d-4141-29b2-7b65-df6ff6c9ce27 Troubleshoot Microsoft verification code issues https://support.microsoft.com/en-us/account-billing/troubleshoot-microsoft-verification-code-issues-409090c4-92b5-42b9-8ae6-bcc97e62fc48 Current status: Our service environment remains healthy, and users should follow the instructions listed in the More info section above. We’ve included links with guidance should you encounter additional issues. Next update by: Thursday, April 30, 2026, at 10:00 PM UTC

Read the full incident report →

Started Apr 29, 2026, 07:37 AM UTC· resolved May 09, 2026, 04:08 PM UTC

1. monitoring Apr 27, 2026, 10:15 AM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’re analyzing service telemetry and investigating reported behavior to determine scope and next steps. Next update by: Monday, April 27, 2026, at 11:30 AM UTC

2. monitoring Apr 27, 2026, 11:26 AM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Some users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Current status: Our investigation indicates client sign-in scenarios may be contributing to the reported behaviour, and we're focused on validating interactions across service components to identify next steps. Next update by: Monday, April 27, 2026, at 12:30 PM UTC

3. monitoring Apr 27, 2026, 12:23 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Current status: We’re reviewing a recent change as part of our ongoing investigation and determining next steps. Next update by: Monday, April 27, 2026, at 1:30 PM UTC

4. monitoring Apr 27, 2026, 01:17 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Current status: We're reverting a recently introduced change to determine if this action provides relief from impact upon completion. In parallel, we're continuing to analyze customer reports, and we're closely monitoring service telemetry to identify our next steps and potential mitigation actions. Next update by: Monday, April 27, 2026, at 2:30 PM UTC

5. monitoring Apr 28, 2026, 02:21 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’ve received reports that impact associated with OL1292958 persists. We've resumed our investigation of the issue and are currently analyzing service telemetry and investigating reported behavior to determine scope and next steps. Next update by: Tuesday, April 28, 2026, at 4:30 PM UTC

6. monitoring Apr 28, 2026, 05:10 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We're performing some changes to optimize the outlook.com iOS sign-in experience and, once complete, we'll provide instructions to help users sign back into their accounts. In the interim as we develop this change, we recommend trying the following steps to sign in to your account: 1. Open the Settings app on your iPhone. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to reenter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Next update by: Tuesday, April 28, 2026, at 11:00 PM UTC

7. monitoring Apr 28, 2026, 10:33 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We're continuing to optimize the outlook.com iOS sign-in experience to address reports of persisting impact. We've also investigated the scenario in which users are encountering repeated sign-in prompts and are then informed, "You've tried to sign in too many times with an incorrect account or password"; users experiencing this scenario should sign in with other methods or reset their password to sign in to their accounts. We'll provide more guidance as it becomes available. Next update by: Wednesday, April 29, 2026, at 1:30 AM UTC

8. monitoring Apr 28, 2026, 11:35 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We're continuing to optimize the outlook.com iOS sign-in experience to address reports of persisting impact. We've also investigated the scenario in which users are encountering repeated sign-in prompts and are then informed, "You've tried to sign in too many times with an incorrect account or password"; users experiencing this scenario should sign in with other methods or reset their password to sign in to their accounts. We'll provide more guidance as it becomes available. Next update by: Wednesday, April 29, 2026, at 1:30 AM UTC

9. monitoring Apr 29, 2026, 01:25 AM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’re continuing to implement further optimizations for the outlook.com iOS sign-in experience to help address reports of persisting impact. While we monitor these optimization changes to assess their effectiveness, we’re also looking into what additional changes may be needed to address the scenario in which users are encountering repeated sign-in prompts. We still recommend that for users experiencing this scenario, they should sign in with other methods or reset their password to sign in to their accounts. We’ll continue to provide more guidance as it becomes available. Next update by: Wednesday, April 29, 2026, at 3:30 AM UTC

10. monitoring Apr 29, 2026, 03:29 AM UTC

    User impact: Users may experience intermittent issues signing in to Outlook.com. More Info: If you are still impacted, we recommend the following steps outlined below to sign-in again on iOS devices: 1. Open the Settings app on your iPhone. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to reenter the password. 5. Tap on Account Settings or directly on the Password field. This will depend on your iOS version. 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: We’ve completed all our optimization changes to fully address the impact for the outlook.com iOS sign-in experience and we’ve confirmed service health has returned to normal. We anticipate that users should no longer experience repeated sign-in prompts hindering the sign-in process. We recommend that users attempt to sign-in again and if they encounter the error message stating “You’ve tried to sign-in too many times with an incorrect account or password”, they should follow the inline user experience to reset their password and sign-in again. Next update by: Wednesday, April 29, 2026, at 9:00 AM UTC

11. monitoring Apr 29, 2026, 07:37 AM UTC

    User impact: Users may experience intermittent issues signing in to Outlook.com. More Info: If you are still impacted, we recommend the following steps outlined below to sign-in again on iOS devices: 1. Open the Settings app on your iPhone. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to reenter the password. 5. Tap on Account Settings or directly on the Password field. This will depend on your iOS version. 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: We’re closely monitoring our internal and external service telemetry to ensure the impact does not reoccur. We still advise that users attempt to sign-in again and if they encounter the error message stating “You’ve tried to sign-in too many times with an incorrect account or password”, they should follow the inline user experience to reset their password and sign-in again. Next update by: Wednesday, April 29, 2026, at 2:00 PM UTC

12. monitoring Apr 29, 2026, 12:46 PM UTC

    User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’re continuing to closely monitor service telemetry which continues to show the mitigation actions have been successful. However, if users are still impacted, we recommend that users attempt to sign-in again and if they encounter the error message stating “You’ve tried to sign-in too many times with an incorrect account or password”, they should follow the inline user experience to reset their password and sign-in again. Next update by: Wednesday, April 29, 2026, at 10:00 PM UTC

Read the full incident report →

Started Apr 28, 2026, 02:21 PM UTC· resolved May 09, 2026, 04:08 PM UTC

1. monitoring Apr 28, 2026, 02:21 PM UTC

   User impact: Users may experience intermittent issues signing-in to Outlook.com in the iOS mail app. Current status: We’ve received reports that impact associated with OL1292958 persists. We've resumed our investigation of the issue and are currently analyzing service telemetry and investigating reported behavior to determine scope and next steps. Next update by: Tuesday, April 28, 2026, at 5:00 PM UTC

2. monitoring Apr 28, 2026, 05:10 PM UTC

   User impact: Users may experience intermittent issues signing-in to Outlook.com in the iOS mail app. Current status: We're performing some changes to optimize the outlook.com iOS sign-in experience and, once complete, we'll provide instructions to help users sign back into their accounts. In the interim as we develop this change, we recommend trying the following steps to sign in to your account: 1. Open the Settings app on your iPhone. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to reenter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Next update by: Tuesday, April 28, 2026, at 11:00 PM UTC

3. monitoring Apr 28, 2026, 10:33 PM UTC

   User impact: Users may experience intermittent issues signing-in to Outlook.com in the iOS mail app. Current status: We're continuing to optimize the outlook.com iOS sign-in experience to address reports of persisting impact. We've also investigated the scenario in which users are encountering repeated sign-in prompts and are then informed, "You've tried to sign in too many times with an incorrect account or password"; users experiencing this scenario should sign in with other methods or reset their password to sign in to their accounts. We'll provide more guidance as it becomes available. Next update by: Wednesday, April 29, 2026, at 1:30 AM UTC

4. monitoring Apr 28, 2026, 11:35 PM UTC

   User impact: Users may experience intermittent issues signing-in to Outlook.com in the iOS mail app. Current status: We're continuing to optimize the outlook.com iOS sign-in experience to address reports of persisting impact. We've also investigated the scenario in which users are encountering repeated sign-in prompts and are then informed, "You've tried to sign in too many times with an incorrect account or password"; users experiencing this scenario should sign in with other methods or reset their password to sign in to their accounts. We'll provide more guidance as it becomes available. Next update by: Wednesday, April 29, 2026, at 1:30 AM UTC

5. monitoring Apr 29, 2026, 01:25 AM UTC

   User impact: Users may experience intermittent issues signing-in to Outlook.com in the iOS mail app. Current status: We’re continuing to implement further optimizations for the outlook.com iOS sign-in experience to help address reports of persisting impact. While we monitor these optimization changes to assess their effectiveness, we’re also looking into what additional changes may be needed to address the scenario in which users are encountering repeated sign-in prompts. We still recommend that for users experiencing this scenario, they should sign in with other methods or reset their password to sign in to their accounts. We’ll continue to provide more guidance as it becomes available. Next update by: Wednesday, April 29, 2026, at 3:30 AM UTC

6. monitoring Apr 29, 2026, 03:29 AM UTC

   User impact: Users may experience intermittent issues signing-in to Outlook.com in the iOS mail app. More Info: If you are still impacted, we recommend the following steps outlined below to sign-in again on iOS devices: 1. Open the Settings app on your iPhone. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to reenter the password. 5. Tap on Account Settings or directly on the Password field. This will depend on your iOS version. 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: We’ve completed all our optimization changes to fully address the impact for the outlook.com iOS sign-in experience and we’ve confirmed service health has returned to normal. We anticipate that users should no longer experience repeated sign-in prompts hindering the sign-in process. We recommend that users attempt to sign-in again and if they encounter the error message stating “You’ve tried to sign-in too many times with an incorrect account or password”, they should follow the inline user experience to reset their password and sign-in again. Next update by: Wednesday, April 29, 2026, at 9:00 AM UTC

Read the full incident report →

Started Apr 27, 2026, 02:22 PM UTC· resolved Apr 28, 2026, 11:47 PM UTC

1. monitoring Apr 27, 2026, 10:15 AM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. Current status: We’re analysing service telemetry and investigating reported behaviour to determine scope and next steps. Next update by: Monday, April 27, 2026, at 11:30 AM UTC

2. monitoring Apr 27, 2026, 11:26 AM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Some users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Current status: Our investigation indicates client sign-in scenarios may be contributing to the reported behaviour, and we're focused on validating interactions across service components to identify next steps. Next update by: Monday, April 27, 2026, at 12:30 PM UTC

3. monitoring Apr 27, 2026, 12:23 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Current status: We’re reviewing a recent change as part of our ongoing investigation and determining next steps. Next update by: Monday, April 27, 2026, at 1:30 PM UTC

4. monitoring Apr 27, 2026, 01:17 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Current status: We're reverting a recently introduced change to determine if this action provides relief from impact upon completion. In parallel, we're continuing to analyze customer reports, and we're closely monitoring service telemetry to identify our next steps and potential mitigation actions. Next update by: Monday, April 27, 2026, at 2:30 PM UTC

5. monitoring Apr 27, 2026, 02:22 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Additionally, impacted users may include, but are not limited to, iOS users. Current status: We've completed reverting the recently introduced change, however, this has not produced any relief. We're continuing to investigate the unexpected increase in error rates affecting two separate error scenarios to identify any potential root cause which may be responsible for this. Additionally, we're closely monitoring service telemetry to discover any other potential actions, or mitigation steps. Next update by: Monday, April 27, 2026, at 3:30 PM UTC

6. monitoring Apr 27, 2026, 03:29 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Additionally, impacted users may include, but are not limited to, iOS users. Current status: We’re seeing specific errors related to authentication key failures. We’re working to determine the underlying cause in order to determine our next mitigation steps. Next update by: Monday, April 27, 2026, at 4:30 PM UTC

7. monitoring Apr 27, 2026, 04:18 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Additionally, impacted users may include, but are not limited to, iOS users. Current status: We're running tests to reproduce impact in our internal environment to obtain additional logging to isolate the source of the unexpected error messages. Next update by: Monday, April 27, 2026, at 5:30 PM UTC

8. monitoring Apr 27, 2026, 05:25 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Additionally, impacted users may include, but are not limited to, iOS users. Current status: We've identified a recent service change that is potentially contributing to user impact. We're testing a roll back of this change to determine if this remediates impact. In parallel, we're continuing to investigate the unusual error patterns that were previously observed. Next update by: Monday, April 27, 2026, at 6:30 PM UTC

9. monitoring Apr 27, 2026, 06:30 PM UTC

   User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Additionally, impacted users may include, but are not limited to, iOS users. Current status: The roll back that was completed does not appear to have provided the intended impact relief. We're continuing to look at internal reproductions of the impact to find potential next steps for mitigation and understand the source of error messages. Next update by: Monday, April 27, 2026, at 7:30 PM UTC

10. monitoring Apr 27, 2026, 07:25 PM UTC

    User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Additionally, impacted users may include, but are not limited to, iOS users. Current status: After reviewing the logs collected from internal reproductions we've found a pattern of errors that point to a recent backend configuration change that may be causing impact. We've completed a roll back of this configuration change. We're now carefully monitoring the environment to determine if it worked as intended or if there are additional steps required for full incident resolution. Next update by: Monday, April 27, 2026, at 8:30 PM UTC

11. monitoring Apr 27, 2026, 07:51 PM UTC

    User impact: Users may experience intermittent issues signing in to Outlook.com. More info: Users may experience intermittent sign‑in failures, including “too many requests” errors or unexpected sign‑outs. Impacted users may include, but are not limited to, iOS users. iOS users on iPhones may need to take the following steps to re-enter their password and access their accounts: -Open the Settings app on your iPhone. -Scroll down and tap on Mail. -Select Accounts under the Mail settings. -Tap on the email account for which you need to reenter the password. -Tap on Account Settings or directly on the Password field (depending on your iOS version). -Enter the updated or correct password in the Password field. -Tap Done to save the changes. -Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: The roll back of the previously mentioned configuration change is complete and our telemetry indicates service health is recovering. We'll continue to monitor to confirm this fully resolves the issue. iOS users may need to take additional steps to re-enter their password to successfully access Outlook accounts. Please see the steps in the "more info" section above. Next update by: Monday, April 27, 2026, at 9:00 PM UTC

12. monitoring Apr 27, 2026, 08:58 PM UTC

    User impact: Users may experience intermittent issues signing in to Outlook.com. More info: iOS users on iPhones MUST take the following steps to re-enter their password and access their accounts: -Open the Settings app on your iPhone. -Scroll down and tap on Mail. -Select Accounts under the Mail settings. -Tap on the email account for which you need to reenter the password. -Tap on Account Settings or directly on the Password field (depending on your iOS version). -Enter the updated or correct password in the Password field. -Tap Done to save the changes. -Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: While the service remains healthy, we're keeping this notification so users can take the actions outlined in this communication: iOS users MUST take additional steps to re-enter their password to successfully access Outlook accounts. Please see the steps in the "more info" section above. Start time: Monday, April 27, 2026, at 8:45 AM UTC End time: Monday, April 27, 2026, at 7:16 PM UTC Next update by: Monday, April 27, 2026, at 10:00 PM UTC

Read the full incident report →

Started Apr 27, 2026, 09:46 AM UTC· resolved Apr 28, 2026, 11:47 PM UTC

1. investigating Apr 27, 2026, 09:46 AM UTC

   User impact: We're checking for potential impact. We're investigating a potential issue affecting access to Outlook.com, and we'll provide an update within 30 minutes.

Read the full incident report →

Started Apr 27, 2026, 08:45 AM UTC· resolved Apr 27, 2026, 07:16 PM UTC

1. monitoring Apr 27, 2026, 08:58 PM UTC

   User impact: iOS users may experience issues accessing Outlook.com. More info: iOS users on iPhones MUST take the following steps to re-enter their password and access their accounts: -Open the Settings app on your iPhone. -Scroll down and tap on Mail. -Select Accounts under the Mail settings. -Tap on the email account for which you need to reenter the password. -Tap on Account Settings or directly on the Password field (depending on your iOS version). -Enter the updated or correct password in the Password field. -Tap Done to save the changes. -Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: While the service remains healthy, we're keeping this notification so users can take the actions outlined in this communication: iOS users MUST take additional steps to re-enter their password to successfully access Outlook accounts. Please see the steps in the "more info" section above. Start time: Monday, April 27, 2026, at 8:45 AM UTC End time: Monday, April 27, 2026, at 7:16 PM UTC Next update by: Monday, April 27, 2026, at 10:00 PM UTC

Read the full incident report →

Started Apr 27, 2026, 08:45 AM UTC· resolved May 08, 2026, 04:00 PM UTC

1. monitoring Apr 30, 2026, 05:33 PM UTC

   User impact: iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail app. More Info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if your account is locked out, you'll need to take multiple actions as outlined below. First, you'll need to follow guidance in the article: https://support.microsoft.com/en-us/office/ios-ipados-users-may-experience-issues-accessing-their-outlook-and-hotmail-accounts-from-the-ios-ipados-default-mail-app-3584197b-8ffb-46ce-b5c6-f4cc71ff29a7 Next, after you've completed all steps in the above article, you will need to complete the numbered steps below for each impacted device. iOS and iPadOS users must take the following steps to access their accounts on EACH impacted device: 1. Open the Settings app on your iOS/iPadOS device. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to re-enter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS/iPadOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: We're continuing to monitor service telemetry and can confirm our environment remains healthy as more users follow the instructions provided in the More info section of this communication for EACH individual impacted device. We’ve included a link to a support article with guidance on remediating impact should affected users encounter issues with this recommended process. Next update by: Friday, May 1, 2026, at 6:00 PM UTC

2. monitoring May 01, 2026, 04:29 PM UTC

   User impact: iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail app. More info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if your account is locked out, you'll need to take multiple actions as outlined below. First, you'll need to follow guidance in the article: https://support.microsoft.com/en-us/office/ios-ipados-users-may-experience-issues-accessing-their-outlook-and-hotmail-accounts-from-the-ios-ipados-default-mail-app-3584197b-8ffb-46ce-b5c6-f4cc71ff29a7 Next, after you've completed all steps in the above article, you will need to complete the numbered steps below for each impacted device. iOS and iPadOS users must take the following steps to access their accounts on EACH impacted device: 1. Open the Settings app on your iOS/iPadOS device. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to re-enter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS/iPadOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: Our service health telemetry indicates that user access continues to be restored as the steps provided in the linked support article in the "More info" section are followed by each impacted device. We're continuing to monitor the telemetry to further validate that the environment remains in a healthy state. Next update by: Monday, May 4, 2026, at 6:00 PM UTC

3. monitoring May 04, 2026, 05:04 PM UTC

   User impact: iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail app. More info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if your account is locked out, you'll need to take multiple actions as outlined below. First, you'll need to follow guidance in the article: https://support.microsoft.com/en-us/office/ios-ipados-users-may-experience-issues-accessing-their-outlook-and-hotmail-accounts-from-the-ios-ipados-default-mail-app-3584197b-8ffb-46ce-b5c6-f4cc71ff29a7 Next, after you've completed all steps in the above article, you will need to complete the numbered steps below for each impacted device. iOS and iPadOS users must take the following steps to access their accounts on EACH impacted device: 1. Open the Settings app on your iOS/iPadOS device. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to re-enter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS/iPadOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: We're continuing to observe the number of impacted devices decrease as users follow the steps provided in the "More info" section and recover access. We'll continue to monitor the telemetry to ensure the service remains in a healthy state. Next update by: Wednesday, May 6, 2026, at 6:30 PM UTC

4. monitoring May 06, 2026, 05:00 PM UTC

   User impact: iOS, iPadOS, and iPad users may experience issues accessing Outlook and Hotmail from the iOS default Mail app. More info: Outlook.com, Hotmail.com, and the Outlook app are still working as expected. However, if your account is locked out, you'll need to take multiple actions as outlined below. First, you'll need to follow guidance in the article: https://support.microsoft.com/en-us/office/ios-ipados-users-may-experience-issues-accessing-their-outlook-and-hotmail-accounts-from-the-ios-ipados-default-mail-app-3584197b-8ffb-46ce-b5c6-f4cc71ff29a7 Next, after you've completed all steps in the above article, you will need to complete the numbered steps below for each impacted device. iOS and iPadOS users must take the following steps to access their accounts on EACH impacted device: 1. Open the Settings app on your iOS/iPadOS device. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to re-enter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS/iPadOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account is syncing properly and emails are being sent/received. Current status: We're continuing to observe the number of impacted devices decrease as users follow the recovery guidance provided in the “More info” section and regain access. Our continued close monitoring of system telemetry indicates that the service remains healthy. Next update by: Friday, May 8, 2026, at 6:30 PM UTC

5. resolved May 08, 2026, 05:21 PM UTC

   User impact: iOS, iPadOS, and iPad users may have experienced issues accessing Outlook and Hotmail from the iOS default Mail app. More info: Outlook.com, Hotmail.com, and the Outlook app worked as expected. However, if the user’s account was locked out, they’ll need to take multiple actions as outlined below. First, users will need to follow guidance in the article: https://support.microsoft.com/en-us/office/ios-ipados-users-may have-experience-issues-accessing-their-outlook-and-hotmail-accounts-from-the-ios-ipados-default-mail-app-3584197b-8ffb-46ce-b5c6-f4cc71ff29a7 Next, after users have completed all steps in the above article, they will need to complete the numbered steps below for each impacted device. iOS and iPadOS users must take the following steps to access their accounts on EACH impacted device: 1. Open the Settings app on your iOS/iPadOS device. 2. Scroll down and tap on Mail. 3. Select Accounts under the Mail settings. 4. Tap on the email account for which you need to re-enter the password. 5. Tap on Account Settings or directly on the Password field (depending on your iOS/iPadOS version). 6. Enter the updated or correct password in the Password field. 7. Tap Done to save the changes. 8. Open the Mail app to confirm that the account was synced properly and that email messages were being sent/received. Final status: We've confirmed through our system telemetry that the service continues to remain healthy. Users who continue to experience issues should follow the steps outlined in "More Info" section. Start time: Monday, April 27, 2026, at 8:45 AM UTC End time: Friday, May 8, 2026, at 4:00 PM UTC This is the final update for the event.

Read the full incident report →

Started Apr 24, 2026, 04:07 AM UTC· resolved Apr 24, 2026, 07:38 PM UTC

No vendor updates were posted for this incident.

Read the full incident report →

Started Apr 24, 2026, 01:32 AM UTC· resolved Apr 24, 2026, 03:15 AM UTC

1. monitoring Apr 24, 2026, 02:24 AM UTC

   User impact: Users may see intermittent issues with the Microsoft Copilot service. More info: Affected users may see the following error messages: "Having trouble with requests" "I'm sorry, I'm having trouble responding to requests right now. Let's try this again in a bit" Current status: We're investigating a potential issue with Microsoft Copilot and checking for impact to your organization. We'll provide an update within 30 minutes.

2. monitoring Apr 24, 2026, 02:52 AM UTC

   User impact: Users may see intermittent issues with the Microsoft Copilot service. More info: Affected users may see the following error messages: "Having trouble with requests" "I'm sorry, I'm having trouble responding to requests right now. Let's try this again in a bit" Current status: We're observing decreased performance on a portion of infrastructure supporting Microsoft Copilot for personal use and are reviewing any recent changes that could be contributing to the impact. Next update by: Friday, April 24, 2026, at 5:00 AM UTC

3. resolved Apr 24, 2026, 03:50 AM UTC

   User impact: Users may have seen intermittent issues with the Microsoft Copilot service. More info: Affected users may have seen the following error messages: "Having trouble with requests" "I'm sorry, I'm having trouble responding to requests right now. Let's try this again in a bit" Final status: We confirmed that a portion of infrastructure responsible for supporting the routing of requests to Microsoft Copilot service was performing below the expected service threshold. We rerouted traffic to alternate infrastructure and monitored the environment to validate that the impact is remediated. Start time: Friday, April 24, 2026, at 1:32 AM UTC End time: Friday, April 24, 2026, at 3:15 AM UTC This is the final update for the event.

Read the full incident report →

Started Apr 08, 2026, 06:45 AM UTC· resolved May 21, 2026, 12:07 PM UTC

1. monitoring Apr 28, 2026, 02:12 PM UTC

   User impact: Users are unable to search, chat or call users in Microsoft Teams Free. More info: Some new users who signed up during the impact window were incorrectly treated as already onboarded, causing onboarding and privacy consent screens to be skipped, their profiles to appear as “Unknown users” to others, and preventing them from being searchable or reliably reachable in chat. Current status: We've identified a recently deployed backend change is causing new Teams Free users to bypass required onboarding steps, leaving user profiles in an incomplete state. As a result, affected users can not be discovered, connect with others, or successfully complete chat request flows. We're analyzing all our available resources to identify a mitigation plan. Start time: Wednesday, April 08, 2026, at 6:45 AM UTC Next update time: Wednesday, April 29, 2026, at 3:30 PM UTC

2. monitoring Apr 29, 2026, 01:44 PM UTC

   User impact: Users are unable to search, chat or call users in Microsoft Teams Free. More info: Some new users who signed up during the impact window were incorrectly treated as already onboarded, causing onboarding and privacy consent screens to be skipped, their profiles to appear as “Unknown users” to others, and preventing them from being searchable or reliably reachable in chat. Current status: We're continuing to review various available mitigation strategies to determine the most effective method to relieve impact. As a workaround, affected users can sign into the mobile application and complete onboarding steps to make the desktop application function as expected. Start time: Wednesday, April 08, 2026, at 6:45 AM UTC Next update time: Wednesday, May 06, 2026, at 3:30 PM UTC

3. monitoring May 06, 2026, 02:37 PM UTC

   User impact: Users are unable to search, chat or call users in Microsoft Teams Free. Current status: We're validating a fix to address the underlying issue. Due to the complexity of the deployment, the validation is taking longer than initially anticipated. Once the fix is finalized, we’ll confirm the update in our internal test environment to ensure it doesn’t introduce any regression, before progressing with a gradual rollout to the affected environment. We'll share an estimated completion timeline when one becomes available. Start time: Wednesday, April 8, 2026, at 6:45 AM UTC Next update by: Wednesday, May 13, 2026, at 3:30 PM UTC

Read the full incident report →

Started Apr 08, 2026, 06:45 AM UTC· resolved May 21, 2026, 12:07 PM UTC

1. monitoring May 13, 2026, 03:15 PM UTC

   User impact: Users are unable to search, chat, or call users in Microsoft Teams Free. Current status: We've completed validations of our fix within our internal testing environment and have initiated a gradual rollout of our fix to affected users. Start time: Wednesday, April 08, 2026, at 6:45 AM UTC Next update by: Wednesday, May 13, 2026, at 5:30 PM UTC

2. monitoring May 20, 2026, 03:20 PM UTC

   User impact: Users are unable to search, chat, or call users in Microsoft Teams Free. Current status: We're monitoring our fix deployment to ensure it has saturated throughout the entire affected environment before validating this issue is resolved. Start time: Wednesday, April 08, 2026, at 6:45 AM UTC Next update by: Wednesday, May 20, 2026, at 5:30 PM UTC

Read the full incident report →

Started Apr 08, 2026, 06:45 AM UTC· resolved May 20, 2026, 12:02 PM UTC

1. resolved May 20, 2026, 04:12 PM UTC

   User impact: Users may have been unable to search, chat, or call users in Microsoft Teams Free. Final status: We've determined that a recent service update introduced the problem for the Microsoft Teams Free new user onboarding flow and caused new accounts to skip this flow entirely and appear as "unknown user." These affected "unknown" users were marked as non-searchable accounts, which resulted in impact. We've validated that our configuration change fix to correct this error has fully deployed throughout the affected environment and has successfully remediated all impact. Start time: Wednesday, April 08, 2026, at 6:45 AM UTC End time: Wednesday, May 20, 2026, at 12:02 PM UTC This is the final update for the event.

Read the full incident report →