areijngoudt:
I need to develop a website which uses client certificates for silent login.
Hi
Base on my understanding , you want to protect your site using Secure channel with certificates. but those windows authentication methods get user identity with a challenge/response Authentication method, So all the people who deosn't have appropriate certificates will be redirect to a common html error page (say you are not authorizated to access this page).So I'm afraid you have to create another web site in order to use form based authentication.
Best Regards
XiaoYong Dai
Microsoft Online Community Support
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.