Microsoft confirmed a widespread outage Thursday affecting Microsoft 365 services including Teams, Exchange Online, SharePoint, Copilot 365 and Defender XDR, primarily across North and South America. The company said servers had gone offline, causing elevated network load, and that it was rerouting traffic and restarting affected servers while pausing all deployments. By mid-afternoon Microsoft had not confirmed a root cause or resolution timeline.
wired.com
· 2026-11-12
Microsoft Outlook suffered a major outage, with over 103,000 user reports on Downdetector, starting around 12:20 PM ET. Microsoft confirmed via its status account that it is investigating problems with Exchange Online mailbox access across multiple connection methods in the Americas, tracked under incident EX1550543.
androidauthority.com
· 2026-11-12
Microsoft Outlook experienced a widespread service disruption that began roughly an hour before reports surfaced. Downdetector logged more than one hundred thousand outage reports from users unable to access the email service. Microsoft's own status page for checking Outlook's service health also appeared to be affected.
9to5mac.com
· 2026-11-12
Users globally reported being unable to access Outlook email via web and apps for over an hour. Microsoft's 365 Status account confirmed a portion of its infrastructure was experiencing elevated load across multiple regions, causing connectivity errors, with some Teams users also affected.
theverge.com
· 2026-11-12
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