Fix Nginx 502 Bad Gateway: Upstream Connection Refused - Recover from Windows 11 Update Blue Screen with System Restore-Change pnpm Store Location

Updated 2026-07-28 20:25:59office-tools
Fix Nginx 502 Bad Gateway: Upstream Connection Refused - Recover from Windows 11 Update Blue Screen with System Restore-Change pnpm Store Location
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.