3rd February 2020

Office 365 (other) RESOLVED - Microsoft Teams - Performance Issues

RESOLVED. Per Microsoft:

We've determined that an authentication certificate has expired causing users who have logged out and those that are still logged in to have issue using the service. We're developing a fix to apply a new authentication certificate to the service which will remediate impact. Scope of impact: This issue may potentially affect any of your users attempting to access Microsoft Teams. Start time: Monday, February 3, 2020, 7:15 AM.