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Fix Task Scheduler Authentication Failed Error - Fix Windows Terminal 'File Locked by System' Error-Fix Robocopy Error 5: Access Denied in Backup Command

Updated 2026-06-15 12:45:47developer-tools
Fix Task Scheduler Authentication Failed Error - Fix Windows Terminal 'File Locked by System' Error-Fix Robocopy Error 5: Access Denied in Backup Command
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.