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Windows Update Proxy Error Checklist for IT Admins - Troubleshoot PowerShell Offline Installation Failure-How to Unlock a File Locked by Windows Defender

Updated 2026-06-14 03:46:51developer-tools
Windows Update Proxy Error Checklist for IT Admins - Troubleshoot PowerShell Offline Installation Failure-How to Unlock a File Locked by Windows Defender
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.