
Fix Microsoft Teams Modern Authentication Failure
When Microsoft Teams shows 'We couldn't sign you in' or 'unable to authenticate with modern authe...
Software troubleshooting desk

When Microsoft Teams shows 'We couldn't sign you in' or 'unable to authenticate with modern authe...

You're signed into Microsoft Teams and suddenly get a message saying your token has expired or au...

You open Outlook and see a message that your token has expired, often with an error code. This us...

You try to install or update an app from the Microsoft Store on Windows 11, but you get an error ...

You try to sign in to Chrome, but it keeps redirecting you back to the login screen. This login l...

If you're getting a 504 Gateway Timeout when connecting to Remote Desktop Services, the gateway o...