Microsoft 365 Outage: Immediate Actions for CIOs

Author(s): Pearl Almeida, John Donovan, Kate Wood, Michel Hebert, Jeff Elliott

Microsoft 365's Nov 12–13, 2026, outage, which began in Exchange Online and spread to Teams, SharePoint, and Copilot, is only partly recovered with no confirmed cause. This note gives CIOs the timeline, status and immediate actions.


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