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Home / developer-tools / How to Fix Nginx Upstream Connection Refused on Port 80 - Error 0x80070005 When Updating Windows – Troubleshooting Guide-Windows Explorer Keeps Restarting in Windows 11: Fixes

How to Fix Nginx Upstream Connection Refused on Port 80 - Error 0x80070005 When Updating Windows – Troubleshooting Guide-Windows Explorer Keeps Restarting in Windows 11: Fixes

Updated 2026-07-28 11:28:20developer-tools
How to Fix Nginx Upstream Connection Refused on Port 80 - Error 0x80070005 When Updating Windows – Troubleshooting Guide-Windows Explorer Keeps Restarting in Windows 11: Fixes
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.