Fix PowerShell Authentication Failed Credentials Error - Fix Windows Terminal Proxy Authentication Failed-Windows 0x80070005 Activation Error Troubleshooting

Updated 2026-06-14 02:11:19backup-recovery
Fix PowerShell Authentication Failed Credentials Error - Fix Windows Terminal Proxy Authentication Failed-Windows 0x80070005 Activation Error Troubleshooting
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.