Is Outlook down? Thousands of Microsoft 365 users report outage issues

Downdetector showed thousands of outage reports from users of Microsoft 365, particularly Outlook.

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Thousands of Microsoft 365 customers worldwide reported having issues with services like Outlook and Teams on Monday.

In social media posts and comments on platforms like outage tracker Downdetector, some impacted said that they were having trouble seeing their emails, loading calendars or opening other Microsoft 365 applications such as Powerpoint.

Microsoft acknowledged “an issue impacting users attempting to access Exchange Online or functionality within Microsoft Teams calendar” earlier in the day. In updates posted on X, the social media platform formerly known as Twitter, the company's status page said it identified a “recent change” that it believed to be behind the problem — and was working to revert it.

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Microsoft shared that it was deploying a fix — which, as of shortly before noon E.T., it said had reached about 98% of “affected environments.”

Still, the company’s status page later added, targeted restarts were “progressing slower than anticipated for the majority of affected users.”

As of midday Monday, Downdetector showed thousands of outage reports from users of Microsoft 365, particularly Outlook.