How to Fix Microsoft Teams Crashing with Error Code - Teams Unable to Authenticate: Modern Auth Fix-Resolve 'Module Not Found' in PowerShell Post-Update

Updated 2026-06-18 06:09:10cloud-software
How to Fix Microsoft Teams Crashing with Error Code - Teams Unable to Authenticate: Modern Auth Fix-Resolve 'Module Not Found' in PowerShell Post-Update
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.