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Fix Nginx 502 Bad Gateway: Upstream Connection Refused - Windows 11 Update Hangs at 0% – Troubleshooting-SourceTree Detached HEAD: How to Fix It

Updated 2026-07-28 14:18:21browser-issues
Fix Nginx 502 Bad Gateway: Upstream Connection Refused - Windows 11 Update Hangs at 0% – Troubleshooting-SourceTree Detached HEAD: How to Fix It
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.