Fix 'Authentication Failed' Errors in Windows Server CMD - How to Fix PowerShell Unable to Connect to Proxy Server-Set-ExecutionPolicy Access Denied in VS Code

Updated 2026-06-14 00:16:52backup-recovery
Fix 'Authentication Failed' Errors in Windows Server CMD - How to Fix PowerShell Unable to Connect to Proxy Server-Set-ExecutionPolicy Access Denied in VS Code
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.