How to Fix Windows Security Log 'Permission Denied' Error - Windows Defender Token Expired After Update Fix-Windows 10: Fix Outlook Not Launching on Startup

Updated 2026-06-19 00:18:51security-tools
How to Fix Windows Security Log 'Permission Denied' Error - Windows Defender Token Expired After Update Fix-Windows 10: Fix Outlook Not Launching on Startup
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.