Microsoft investigates widespread Microsoft 365 outage

Microsoft is investigating a widespread outage affecting Microsoft 365 services Thursday, with users reporting problems accessing Outlook email and other platforms.

In an update posted to its official Microsoft 365 Status account on X, the company said it was looking into reports of users having trouble accessing their Exchange Online mailboxes.

“While we’re working to mitigate impact, we’ve confirmed the issue may affect Microsoft 365 service connectivity for users in any region,” the post read.

Another post said Microsoft has “begun redistributing connection traffic across our broader worldwide infrastructure to help balance the load.”

We're investigating reports of users experiencing issues accessing Exchange Online mailboxes through multiple connection methods in the Americas. More details can be found in the Microsoft 365 admin center under EX1550543.

— Microsoft 365 Status (@MSFT365Status) November 12, 2026