Webroot incident
Zix - MS 365 - Users may be unable to connect to their mailboxes in Exchange Online through multiple connection methods
Ongoing since 06:05 PM UTC, affecting Zix Office 365.
Microsoft Update - 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
Affected components
Update timeline
- investigating Nov 12, 2026, 06:05 PM UTC
Microsoft 365 is currently experiencing issues Users may be unable to connect to their mailboxes in Exchange Online through multiple connection methods. Teams are currently assembled and working to resolve the issue. We appreciate your patience. 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 Scope of impact This issue may affect users in North America, Latin America, Canada, and Chile. Tracking Number: EX1550543
- investigating Nov 12, 2026, 06:40 PM UTC
Microsoft Update - 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
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