Fix 'Windows Update Command Not Found' in PowerShell - Docker Desktop Stuck on 'Starting' Forever: Troubleshooting Checklist-Fix 0x80070643 Windows Defender Module Missing

Updated 2026-06-13 17:02:29windows-fixes
Fix 'Windows Update Command Not Found' in PowerShell - Docker Desktop Stuck on 'Starting' Forever: Troubleshooting Checklist-Fix 0x80070643 Windows Defender Module Missing
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.