Fix Outlook Authentication Failed When Modern Auth Is Disabled - How to Resolve Microsoft Teams Crash Errors-Fix OneDrive File Locked by System Process

Updated 2026-06-14 13:45:35backup-recovery
Fix Outlook Authentication Failed When Modern Auth Is Disabled - How to Resolve Microsoft Teams Crash Errors-Fix OneDrive File Locked by System Process
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.