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Fixing Nginx Upstream Connection Refused on Port 443 - Windows Defender Real-Time Protection Not Working? Fix It Here-How to Resolve Error 0x80070005 in Windows 11

Updated 2026-07-28 12:12:32office-tools
Fixing Nginx Upstream Connection Refused on Port 443 - Windows Defender Real-Time Protection Not Working? Fix It Here-How to Resolve Error 0x80070005 in Windows 11
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.

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