Microsoft Teams went down for around four hours on Monday, alongside Azure and other Microsoft 365 services. Microsoft blamed the issues on “a recent change to an authentication system” took some Microsoft 365 services down. A roll back to the change took longer than Microsoft expected, with the company confirming at 12:35AM ET that “impact has been largely mitigated.”
We’ve confirmed impact has been largely mitigated and we’ll continue to provide service-specific updates via https://t.co/AEUj8uAGXl and under MO244568 in the admin center.
— Microsoft 365 Status (@MSFT365Status) March 16, 2021
The issues started around 3:30PM ET, and Microsoft quickly confirmed they were affecting users worldwide. This is the first major Microsoft Teams outage since the service went down back in September, alongside other Microsoft 365 services like Office 365 and Outlook. Microsoft also blamed its previous outage on a configuration change.
Azure Active Directory also experienced issues as part of this outage, alongside Office web apps, Exchange Online, SharePoint Online, and other Microsoft services. Xbox game streaming (xCloud) and prepaid codes weren’t working, either. Xbox party chat also had some intermittent issues.
Here’s a full list of everything that was affected by the outage:
- Microsoft Teams
- Office Licensing
- Office Web Applications
- Exchange Online
- Microsoft Forms
- SharePoint Online
- OneDrive for Business
- Microsoft Stream
- Xbox Game Streaming
- Xbox store purchases
- Xbox Party chat
WarnerMedia even delayed the virtual premiere for Zack Snyder’s Justice League, due to Microsoft’s services outage today.
Microsoft now has 115 million people using its Microsoft Teams communications app every day. The service has grown rapidly during the pandemic, as students and businesses moved online for remote working and learning. As a result, a worldwide outage like this has now affected millions of people trying to use Microsoft Teams to communicate with co-workers, teachers, or fellow students.
Update March 15th, 10:47PM ET: Article updated with more information from Microsoft.
Update March 16th, 5:23AM ET: Article updated with more information from Microsoft.