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Microsoft Teams suffers outage due to expired certificate, company says

The workplace collaboration app was down for about three hours on Monday.

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Microsoft flubbed on its Teams app on Monday.

Microsoft

Microsoft Teams , a workplace collaboration app designed to rival Slack, suffered an outage Monday after Microsoft failed to renew its authentication certificate. The tool was down for about three hours while Microsoft investigated and updated the certificate, according to the company's Twitter account. By around 9 a.m. PT Monday, the service was back up for most users though the issue wasn't fully resolved until later in the day.

"We've addressed an access issue that some customers may have experienced, and service is fully restored," a Microsoft spokesperson told CNET in an email Monday.

Microsoft acknowledged the problem in a tweet at 6:19 a.m. PT.

The company announced the full fix in a tweet at 1:27 p.m. PT.

Microsoft Teams is a communication platform for businesses that includes chat, video meetings and file storage. 

Originally published Feb. 3.
Update, Feb. 4: Adds comment from Microsoft. 

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