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Fix Windows Defender Invalid Configuration Error 0x800705b4 - Fix Windows Update Sync Issues Between PC and Server-Command Prompt Connection Refused: Firewall Troubleshooting

2026-06-13 18:30:00office-tools
Fix Windows Defender Invalid Configuration Error 0x800705b4 - Fix Windows Update Sync Issues Between PC and Server-Command Prompt Connection Refused: Firewall Troubleshooting

Final checklist

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

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