Microsoft 365 and Outlook Went Down for Ten Hours: What Orange County Businesses Should Change Before the Next One
On 12 November 2026 Exchange Online lost capacity for about ten hours, taking Outlook, Microsoft 365 mail and calendar, and parts of Teams, SharePoint, Copilot and Defender with it, and breaking the AI connectors that depend on them. This episode walks the outage hour by hour from Microsoft’s own updates, covers who was hit from county sheriffs to AI providers, explains why one Exchange fault reaches so far, puts a cost on the day for an Orange County firm, and gives seven changes to make before the next one.
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