Fix Windows Update 'Permission Denied' Errors - How to Fix 'File Locked by System' in Windows Defender-How to Configure a New Outlook Account Correctly

Updated 2026-06-18 02:26:18office-tools
Fix Windows Update 'Permission Denied' Errors - How to Fix 'File Locked by System' in Windows Defender-How to Configure a New Outlook Account Correctly
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.