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Microsoft 365 outage hit Outlook, Teams and Copilot
Published Nov 14, 2026 · Last checked Nov 14, 2026 · Last changed Nov 14, 2026A Microsoft 365 outage that began on Nov 12, 2026 disrupted Outlook, parts of Teams and Copilot in 74 countries.
- For
- Any business that runs on Microsoft 365. All sizes. Owner or IT.
The facts
- Reports of problems rose shortly after 1 p.m. Eastern on Thursday, Nov 12, 2026, Euronews reported.
- About 130,000 US users reported Outlook problems on Downdetector at the peak.
- Downdetector showed disruption in 74 countries and territories.
- Copilot Chat failed to load or respond, and Copilot could not reach work email, calendars and files.
- Teams calls and chats mostly kept working. Calendar scheduling and invites were affected.
- Microsoft said servers failed health checks and that the extra load was not caused by more user traffic. It said there was no sign of a cyberattack.
- By Friday afternoon, Microsoft reported continued recovery, with some delayed email still arriving.
What it means for you
A company that put its email, calendar and AI assistant with one provider lost all three at the same time.
Sources
- Euronews, news report, Nov 13, 2026.
- NBC Palm Springs, news report, Nov 12, 2026.