Microsoft 365 outage hits Outlook email and Teams calendars worldwide

Microsoft began a wider patch rollout Friday as the outage disrupted government email and Microsoft 365 connectors in ChatGPT and Claude.

A global Microsoft 365 outage continued into Friday, disrupting Outlook email and some Teams features.

Microsoft said in a 7:25 am UTC update that a patch had improved stability on some servers and that it was working to deploy the fix more widely. The update, republished by the University of Pennsylvania, gave no timetable for restoration.

The outage began Thursday, leaving some users unable to access their Exchange Online mailboxes. Microsoft said a process that handles secure connection became overloaded, causing affected servers to stop processing requests.

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