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Check Which Process Locked a File Using PowerShell - PowerShell Service Unavailable Windows 11 Fix-How to Fix Windows Defender Error 404

2026-06-14 03:04:51developer-tools
Check Which Process Locked a File Using PowerShell - PowerShell Service Unavailable Windows 11 Fix-How to Fix Windows Defender Error 404

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.