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Users may be unable to connect to multiple Microsoft 365 services

Posted 13 Nov 16:07 UTC, left the provider's feed by 13 Nov 17:59 UTC.

Unknown Duration: the provider stated no start
6Other incidents at the same time

What it affected

As the provider names it

Admin center

What the provider posted

Newest first
  1. 13 Nov 16:07 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 Defen…

Around it

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What changed

  1. Incident state: Ongoing → Ended
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  1. 13 Nov 2026 · 17:59:55 UTC Observed stateOngoing → Ended
ChangeIntel

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Sources read 15 Nov 18:02 UTC · 254 of 275 readable · 250 fully read · documentation 469/469 current