Fix Windows Update Token Expired Registry Error - Windows Update Fails Due to Port 80 in Use-Fix Windows Defender Real-Time Protection Crashing on Windows 11

Updated 2026-06-13 14:37:24cli-errors
Fix Windows Update Token Expired Registry Error - Windows Update Fails Due to Port 80 in Use-Fix Windows Defender Real-Time Protection Crashing on Windows 11
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.