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Fix Windows Defender Error 0x800704ec: Real-Time Protection - Troubleshooting Nginx Backend Connection Refused-Remote Desktop Connection Fails: RDP Port Not Open

Updated 2026-07-28 06:13:55developer-tools
Fix Windows Defender Error 0x800704ec: Real-Time Protection - Troubleshooting Nginx Backend Connection Refused-Remote Desktop Connection Fails: RDP Port Not Open
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.