I am having the exact same error attempting to go to AccessPoint. We are in DMS mode, are using it to do SSO, and when I set up the SSL certificate on the server, I get this error when attempting to go over SSL/port 443. http still works fine, but https does not.
Did you find any resolution to this in the last five months since you posted it?
If I find any resolution to this I will post it to the forums.
I managed to successfully setup SSO + SSL before (plus over tunneling). (SSO = WebSEAL). The "Authentication Failed" error might be coming from your IIS Web Site authentication setup. Enable the Anonymous Authentication even though your seting in QVS is Prohibit Anonymous. This is how fixed the problem.
Thanks guys, but neither one of your suggestions worked for me unfortunately. Gary, my port was always set to 443 so that wasn't the problem. What sort of DSP are you using for your users?
Elbert, allowing anonymous authentication didn't change anything either. Are you sure that it wasn't a different setting somewhere?