Fixing 'Access Denied' Errors When Running PowerShell Scripts - Fix Windows Security Service Unavailable in Windows 11-Fix OneDrive Connection Refused Error 0x8004de40

Updated 2026-06-14 19:11:46developer-tools
Fixing 'Access Denied' Errors When Running PowerShell Scripts - Fix Windows Security Service Unavailable in Windows 11-Fix OneDrive Connection Refused Error 0x8004de40
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.