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