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1000’s of Microsoft 365 clients worldwide reported having points with companies like Outlook and Groups on Monday.

In social media posts and feedback on platforms like outage tracker Downdetector, some impacted stated that they had been having bother seeing their emails, loading calendars or opening different Microsoft 365 functions akin to Powerpoint.

Microsoft acknowledged “a difficulty impacting customers trying to entry Trade On-line or performance inside Microsoft Groups calendar” earlier within the day. In updates posted on X, the social media platform previously often called Twitter, the corporate’s standing web page stated it recognized a “latest change” that it believed to be behind the issue — and was working to revert it.

Microsoft shared that it was deploying a repair — which, as of shortly earlier than midday E.T., it stated had reached about 98% of “affected environments.”

Nonetheless, the corporate’s standing web page later added, focused restarts had been “progressing slower than anticipated for almost all of affected customers.”

As of noon Monday, Downdetector confirmed hundreds of outage reviews from customers of Microsoft 365, notably Outlook.