Microsoft 365 outage disrupts Outlook, Teams and Exchange Online
Microsoft experienced a widespread service disruption on Thursday affecting Microsoft 365, Outlook, Teams and Exchange Online, with Downdetector.com logging thousands of user reports across regions. Microsoft said servers unexpectedly went offline, overloading remaining infrastructure and causing some systems to fail automated health checks. By 4 p.m., the company said it had found an alternative health-check method restoring some servers and was rolling it out more broadly while preparing automated recovery tools.