GlobalProtect VPN authentication failed (invalid username or password)

Modified on Sat, 18 Apr at 1:34 PM

Problem:

User cannot connect to GlobalProtect VPN due to authentication failure

Symptoms:

- "Authentication failed" error

- "Invalid username or password"

- VPN login keeps failing

- User recently changed password

Cause:

Cached credentials or incorrect login format after password change

Resolution:

1. Verify correct username format (e.g. email or domain\username)

2. Confirm password works on another system (email, SSO, etc.)

3. Open GlobalProtect client

4. Click Sign Out (if available)

5. Close GlobalProtect completely

6. Reopen GlobalProtect

7. Enter credentials manually (do not use saved password)

8. Attempt connection again

Keywords:

VPN login failed, GlobalProtect authentication error, invalid credentials VPN, VPN not working after password change