How to Fix 'Windows Defender Module Not Found' Error - Fix Windows Store Error 0x80073cf9 Permission Denied-PowerShell Login Loop After Update: How to Break Free

Updated 2026-06-13 17:38:36cloud-software
How to Fix 'Windows Defender Module Not Found' Error - Fix Windows Store Error 0x80073cf9 Permission Denied-PowerShell Login Loop After Update: How to Break Free
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.