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Fix Nginx 502 Bad Gateway: Upstream Connection Refused - Nginx SSL Certificate Permission Denied Fix-Fixing Windows Update Error 0x80070005 and SFC Scan Issues

Updated 2026-07-28 07:53:58windows-fixes
Fix Nginx 502 Bad Gateway: Upstream Connection Refused - Nginx SSL Certificate Permission Denied Fix-Fixing Windows Update Error 0x80070005 and SFC Scan Issues
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.