Teams is recovering from what Microsoft said was a global outage.
The Microsoft 365 Twitter account tweeted about the issue at 11:30 BST following complaints on social media from users around the world.
We’ve confirmed that this issue affects users globally. We’re reviewing monitoring telemetry and recent changes to isolate the source of the issue. More information can be found under TM252802 in the admin center.
— Microsoft 365 Status (@MSFT365Status) April 27, 2021
Microsoft initially said the outage was impacting Europe and Asia but later said it “affects users globally”. Users on Twitter claimed that the UK and US were among the affected regions.
However, Microsoft tweeted again just after 2pm BST stating: “We’ve monitored the environment and confirmed that the service is performing as expected.
“If a user is still experiencing impact, they need to restart their clients to recover.”
We’ve monitored the environment and confirmed that the service is performing as expected. If a user is still experiencing impact, they need to restart their clients to recover. Further details can be found under TM252802 in the admin center.
— Microsoft 365 Status (@MSFT365Status) April 27, 2021
It appears that both desktop app and web clients have been affected.
Some users reported seeing “a white screen” when trying to open the application, while access via Office 365 returned a 401 error. Other users claimed to be shown a message stating “This page isn’t working”.
Microsoft claimed to have identified the problem just after 1pm and said that the service was “showing signs of recovery”.
The vendor has not yet publicly disclosed the cause of the outage but said that more information is available to Microsoft 365 administrators via the Admin Center.
This is the second time in the last two months that Teams has gone offline.
In mid-March the collaboration tool was one of a number of Microsoft service to be downed by an authentication update, which the vendor was forced to roll back.
