How to Fix Windows Defender File Locked Error 0x80070020 - Troubleshoot Windows Update Connection Refused Error-Windows Update Token Expired: Clean Boot Guide

Updated 2026-06-13 14:17:22macos-help
How to Fix Windows Defender File Locked Error 0x80070020 - Troubleshoot Windows Update Connection Refused Error-Windows Update Token Expired: Clean Boot Guide
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.