Microsoft 365 Issue 'Fully Resolved' After Outage Impacted Thousands of Users Worldwide

Reports of outages began coming in around 7:45 a.m. EST on Sept. 12, and peaked just before 9 a.m.

<p>Serene Lee/SOPA Images/LightRocket via Getty</p> Thousands of Microsoft 365 and Azure users experienced outages on the morning of Thursday, Sept. 12

Serene Lee/SOPA Images/LightRocket via Getty

Thousands of Microsoft 365 and Azure users experienced outages on the morning of Thursday, Sept. 12

Microsoft 365 services have been "fully resolved" after they went down on Thursday, Sept. 12, leaving thousands of users across the globe without their services.

Shortly after 8:30 a.m. ET, the company announced in a post on X that it was “investigating an issue where users may be unable to access multiple Microsoft 365 services.”

The outage impacted the use of various Microsoft products, including Outlook, Teams and XBox Live, according to The Evening Standard.

Nearly 25,000 users were left without services at one point during the outage, according to outage tracking website Downdetector.com.

Reports of outages began coming in around 7:45 a.m. and peaked just before 9 a.m., per the website.

Related: Global Technology Outage Caused by Failed Software Update Shuts Down Flights, Banks and Business

Azure, Microsoft’s cloud service, announced on X that it was also “investigating customer reports of a potential issue,” which they claimed impacted those “connecting to Microsoft services from AT&T networks.

Over 1,600 outages were reported just after 9 a.m. on Sept 12. Nearly 1,000 Azure outages were reported on the morning of Wednesday, Sept. 11, as well.

As of 10:45 a.m., Microsoft "confirmed that impact has been remediated."

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"We've confirmed that a change within a third-party ISP's managed-environment resulted in impact. The ISP has reverted the change and we're now seeing signs of recovery," the company said in a post shared prior.

A Microsoft spokesperson also confirmed the news to CBS MoneyWatch: "A third-party Internet Service Provider incident that impacted a subset of their customers' ability to access our services is now fully resolved."

Microsoft and AT&T did not immediately respond to PEOPLE’s requests for comment.

Related: AT&T Gives Customers Affected by Nationwide Outage $5 Credit: 'Making It Right'

Thursday's outage came less than two months after a massive IT disruption impacted users of Microsoft 365 apps on July 19. The outage was blamed on a failed software update by CrowdStrike, an American cybersecurity firm.

It was a slow process to resolve the outage, which affected major airlines, hospital systems and businesses around the world.

Troy Hunt, a cybersecurity consultant, described the extraordinary event on X as “the largest IT outage in history.”

“This is basically what we were all worried about with Y2K, except it’s actually happened this time,” he explained in the post, sharing the day the outage began.

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