At the height of the issue, tens of thousands of users reported problems to an outage-tracking website

‘Problematic code change’ to blame for Microsoft outage, company says

Several Microsoft programs including Outlook experienced outages Saturday afternoon.

At the height of the issue, tens of thousands of users reported problems to an outage-tracking website.

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While Microsoft stopped short of calling it an outage, the company confirmed it was aware of a problem.

“We’re investigating an issue in which users may be unable to access Outlook features and services,” Microsoft said in a series of posts on X.

The company said it reviewed “telemetry and customer provided logs,” and later that it had “identified a potential cause of impact.”

Microsoft said it reverted coding it thought was behind the issue, and confirmed service had been restored by 7 p.m., about three hours after customers first noted the outage.