Hi,
It seems two questions asked in this thread.
1st question:
"The page isn't redirecting properly"
do you expect to see the message after select certificate? If not, any idea why it shown above message?
2nd question:
filter set for the user directory where an user whose title is set as store, should not be allowed to access the Forms based authentication
R: My understanding is user with title store need to be challenge by Cert authentication only.
Other user challenge by Cert or Form based authentication.
If my understanding is correct, then my response as below.
Resource is protected by authentication scheme. This means what authentication scheme trigger is based on what resource you access.
If the protected resource is to same URI, then out of the box Siteminder cannot achieve what you intended to.
A custom authentication scheme might be able to achieve your objective. This need to engage CA Services if custom authentication scheme is needed.
Regards,
Kar Meng