Widespread Microsoft service outage affects thousands of users

On Thursday, November 12, 2026, Microsoft experienced a widespread service outage affecting several core platforms, including Outlook, Microsoft 365, Teams, Copilot, and OneDrive. Downdetector.com reported over 65,000 user complaints regarding access issues, with the majority of problems centered on the company’s official websites. During the incident, Microsoft's own service health dashboard also became temporarily inaccessible to the public.

The company addressed the situation through its Microsoft 365 Status account on social media, confirming it was investigating access issues specifically impacting Exchange Online mailboxes. The technical disruptions were primarily identified within the Americas. Microsoft directed affected users to consult the Microsoft 365 Admin Center under the incident entry EX1550543 for ongoing updates regarding the situation.

While the exact cause of the failure remains under investigation, the event marks a significant interruption for enterprise and personal users reliant on the Microsoft ecosystem. The company is actively working to resolve the connection errors affecting various login methods, and users are advised to monitor official status channels for further developments.