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Fix Windows 11 Blue Screen After Update with System Restore - Fix Nginx 502 Bad Gateway: Upstream Connection Refused-How to Fix Windows Update Service Not Running

Updated 2026-07-28 09:44:58windows-fixes
Fix Windows 11 Blue Screen After Update with System Restore - Fix Nginx 502 Bad Gateway: Upstream Connection Refused-How to Fix Windows Update Service Not Running
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.