Microsoft 365 experienced a massive global outage beginning November 13, 2026, affecting Exchange Online email, Teams, SharePoint, and Copilot services across North America, Latin America, and other regions. Multiple servers unexpectedly stopped responding simultaneously, concentrating traffic on remaining servers and causing recovered systems to fail again when reloaded. Microsoft announced it was investigating the cause—attributed to potential server health issues, processing overloads, or configuration changes—and attempting recovery through server restarts, rerouting, and system rebuilds as of early November 13.
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