Microsoft restores service to Outlook and Teams after historic outage crippled businesses, governments

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Microsoft had said server issues were behind the incident.

Microsoft said ​on Saturday that services had fully recovered across Teams, Outlook and its other products, ending a global outage that crippled online communications for businesses and governments for over 24 hours.

“We have completed ‌our efforts to address the underlying issue of the incident and restored service to the remaining impacted customers and regions,” the company posted on X.

Microsoft had said server issues were behind the incident that also affected its Copilot AI assistant, and that it was not aware of any malicious activity, ruling out AI as the cause.

Outlook and Teams are two of the most widely used workplace applications with hundreds of millions of users.

The outage prevented people from performing essential functions such as sending emails, managing calendars and hosting virtual ​meetings.

It affected government agencies from Australia and Japan to the United States, caused delays at trading firms, hindered some companies from publishing earnings and prompted airlines to warn customers of communication lags, according to ​public statements.

Organizations that host Microsoft services on their own servers, rather than in the cloud, were somewhat spared.

The outage, reports of which started climbing around ⁠12:25 p.m. ET on Thursday according to Ookla, is one of the longest in Microsoft’s history and the second disruption to its services this year.

Microsoft said the outage specifically hit features tied to Exchange Online — its cloud-based email and ​scheduling hub — leaving unconnected applications operational.

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