We are experiencing a minor issue when users login to Qlikview via a browser (IE8). When a user attempts to login they always receive a 'Login Failed' error for a second or so, then the login completes successfully. It's more an annoyance than anything but users are complaining so I thought I best investigate.
We are using a DMS setup if that makes any difference?
It sounds as you have run into bug 35692 - The login.htm found in C:\Program Files\QlikView\Web\login.htm is showing login failed before continuing on to the Access point, which has been reported for version 9.
I have two machines, same IE, same settings .. clear history, cache etc, one goes immediately to "login failed" with no login dialog, the other works just fine. Only difference I see using fiddler2 is some cookie information in the handshaking