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Fixing Nginx Upstream Connection Refused on Port 443 - How to Stop Windows Defender Real-Time Protection from Turning Off-Fix Limited Connectivity on Windows 11 Wi-Fi: Practical Steps

Updated 2026-07-28 14:43:34macos-help
Fixing Nginx Upstream Connection Refused on Port 443 - How to Stop Windows Defender Real-Time Protection from Turning Off-Fix Limited Connectivity on Windows 11 Wi-Fi: Practical Steps
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.