Fix Nginx 502 Bad Gateway on Docker Ubuntu - Resolve 0x80070002 Update Failed Error-Taskbar Icons Disappeared After Explorer Crash: How to Restore Them

Updated 2026-07-28 05:21:18office-tools
Fix Nginx 502 Bad Gateway on Docker Ubuntu - Resolve 0x80070002 Update Failed Error-Taskbar Icons Disappeared After Explorer Crash: How to Restore Them
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.