Fixing Nginx Upstream Connection Refused on Port 443 - Windows Explorer Keeps Restarting: Troubleshooting Guide-Windows 11 Blue Screen After Update: Hardware Issue Fixes

Updated 2026-07-28 03:43:28office-tools
Fixing Nginx Upstream Connection Refused on Port 443 - Windows Explorer Keeps Restarting: Troubleshooting Guide-Windows 11 Blue Screen After Update: Hardware Issue Fixes
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.