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Fix 'Windows Defender File Locked by Another Program' Error - How to Delete Windows Update Cache Files-How to Unblock Port 1688 for Windows Activation

Updated 2026-06-13 15:26:39cloud-software
Fix 'Windows Defender File Locked by Another Program' Error - How to Delete Windows Update Cache Files-How to Unblock Port 1688 for Windows Activation
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.