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Fix 'Windows Update Configuration Failed Reverting Changes' - Fix Windows Defender Permission Denied When Scanning a Folder-Breaking the Outlook Office 365 Login Loop

Updated 2026-06-14 02:20:34office-tools
Fix 'Windows Update Configuration Failed Reverting Changes' - Fix Windows Defender Permission Denied When Scanning a Folder-Breaking the Outlook Office 365 Login Loop
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.