We are running BorderManager 3.8.4 on NW 6.5 SP4 proxy version 5.00.16
I am trying to can proxy authentication to work. so clients not running
clntrust have to login to access the internet.

The login page is display but when I login I get "login Failed, Please try
again" and it takes me back to the login page again.

In the Authenication Context page I have setup the following

Enabled Proxy Authentication
SSL Port 444
KeyID SSLCertificateIP