Microsoft Outlook outage cause seemingly revealed

Incident still open, awaiting updateminorMonitoring signalFirst recorded update 12-11-2026 22:15

Microsoft is investigating failed server checks as a possible cause of the Nov. 12 Outlook outage and is testing a fix on some affected servers.

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This incident was reported earlier. Its current impact is not confirmed by a recent official check.

Last official update:: 12-11-2026 22:15
Last successful official status feed check:: 13-11-2026 01:00

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Updates (1)

12-11-2026 22:15
Microsoft Outlook outage cause seemingly revealed
Microsoft is investigating failed server checks as a possible cause of the Nov. 12 Outlook outage and is testing a fix on some affected servers.
Mashable ↗

What to do right now

Check the provider's own status page. Open Outlook's official status page ↗
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Communicate early. Even a one-line update to your users referencing the upstream incident reduces support load dramatically.
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