Microsoft Teams Connection Refused: Troubleshooting Checklist - OneDrive 404 Error After Windows Update Fix-Chrome Fails to Start in Safe Mode: Fixes to Try

Updated 2026-06-14 12:16:15macos-help
Microsoft Teams Connection Refused: Troubleshooting Checklist - OneDrive 404 Error After Windows Update Fix-Chrome Fails to Start in Safe Mode: Fixes to Try
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.