Microsoft investigates ongoing Exchange Online, Outlook outage

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Microsoft is investigating an ongoing outage impacting Microsoft 365 services after customers have reported experiencing issues while trying to sign into, access, and receive emails on the outlook.com portal and via Exchange Online.

"We're investigating an issue with users accessing or experiencing degraded functionality when using Exchange Online and Outlook – free personal email and calendar from Microsoft services," Microsoft said in a tweet via the company's official Twitter account for updates on Microsoft 365 services.

Admins were also told that they could find more information regarding these ongoing problems in the admin center under EX401976 and OL401977.

"We suspect there may be unexpected network drops which are contributing to the degraded experience and are reviewing diagnostic logs to understand why," the company added.

While Redmond did not reveal the scale of the issue, thousands of reports have been submitted in the past 24 hours on DownDetector by Outlook and Exchange Online users who have either been unable or experienced difficulties when trying to log in or email.
 
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