Microsoft 365 down for many, including Microsoft Teams and Skype for Business

Microosft Teams iOS and Surface (Image credit: Future)

What you need to know

Several Microsoft 365 services are down at the moment.
Skype for Business, Microsoft Teams, SharePoint Online, and several other services are affected.
The issue appears to be isolated to the Eastern United States.

Updated December 13, 2019: This issue was fixed, as expalined my Microsoft on Twitter.

Microsoft 365 services are down for some users at the moment. The outage affects Microsoft Teams, Skype for Business, SharePoint Online, and other services. According to Microsoft, the outage appears to be isolated to people in the Eastern United States.

We're investigating an issue in which some users may be unable to access Microsoft 365 services and features. Additional details about this issue can be found on https://t.co/AEUj8uAGXl or under MO198009 in the admin portal.We're investigating an issue in which some users may be unable to access Microsoft 365 services and features. Additional details about this issue can be found on https://t.co/AEUj8uAGXl or under MO198009 in the admin portal.— Microsoft 365 Status (@MSFT365Status) December 12, 2019 December 12, 2019

Microsoft shares more details on the Office status page. That page should be updated when the issue is resolved.

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Sean Endicott is a News Writer at Windows Central, where he covers Windows 11, Surface hardware, Microsoft 365, AI, apps, and the broader PC ecosystem. Since joining the site in 2017, he has written well over a thousand articles across the Microsoft landscape, covering breaking news, analysis, and feature reporting.

He writes Windows Wrap, a weekly column covering the biggest stories in Windows and the PC industry, and what they mean for the platform going forward.

Before joining Windows Central full-time, Sean worked in journalism and media production after earning a First Class degree in Broadcast Journalism from Nottingham Trent University. Outside of tech, he is an award-winning American football coach based in Nottingham, England, and was named BAFCA Youth Coach of the Year in 2024.