Can you clear your cache
If your GP (Global Protect) fails with Authentication Failure Enter Login credientials
- Verify your Login Credientials are correct
- Clear Your Cache by Delete the PanPUAC_* Files
- C:\Users\<UserName>\AppData\Local\Palo Alto Networks\GlobalProtect
- Delete PanPUAC_*
Global Protect Components
Certificate Management
Connections
Authentication
Debugging