Microsoft still isolating M365 server outage, revises list of impacted services

SumitGup · x · 2026-11-13

Microsoft says it is still working to isolate the issue affecting server availability across Microsoft 365 (incident MO1550821), and has revised the list of impacted services and features in the admin center. Observers quip that Microsoft has no clear idea how to fix it yet.

Related event: Microsoft Global Outage Knocks Out Outlook, Teams and Copilot for Hours(35 posts)→

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