Fixing Windows Defender Authentication Failed Permission Denied - Troubleshoot PowerShell Module Not Loading-How to Rebuild Windows Search Index for Dual Boot Users

Updated 2026-06-13 21:35:54windows-fixes
Fixing Windows Defender Authentication Failed Permission Denied - Troubleshoot PowerShell Module Not Loading-How to Rebuild Windows Search Index for Dual Boot Users
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.