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.
The company said it attempted to restore services by restarting infrastructure, redirecting network traffic and expanding server capacity. Microsoft said there was no indication of a security breach.
The outage also affected features in Microsoft Copilot and Defender for Office 365. In Teams, users had trouble scheduling meetings and sending invitations. Microsoft said most Teams…
