Gateway Authentication Failure usually occurs when the username and password combination entered into the U-Verse login screen is incorrect.
Another possible cause of this error message is a problem with your account or with the U-Verse service. If you believe that you are entering the correct login information but are still experiencing difficulty logging in, contact us for assistance.
Check fix here https://readus247.com/gateway-authentication-failure-u-verse/
Kathleen Wine Staff asked 3 years ago
