Microsoft 365 outage recovery stalls as restored servers fail under load
Microsoft is still working through a global Microsoft 365 outage that has lasted more than 10 hours. The disruption began on November 12, 2026, with Exchange Online mailbox access failures in the Americas, and it spread to Outlook, Teams, SharePoint, Copilot, and Microsoft Defender XDR users in any region. The company has not yet found a fix that holds. Servers that engineers return to service keep becoming unresponsive again once…