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Fixing PowerShell Authentication Failed Due to Certificate Errors - Resolve Windows Update Command Error in Windows 11-How to Resolve Windows Defender Port Conflict via Registry

2026-06-13 19:13:15macos-help
Fixing PowerShell Authentication Failed Due to Certificate Errors - Resolve Windows Update Command Error in Windows 11-How to Resolve Windows Defender Port Conflict via Registry

Final checklist

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