I am trying to clear the cleintcertificates on the loading of a radwindow. What I am trying to do is force users to pick the client certificate agian on the page. What I have is a radwinow that pops-up with the user agreement. when they click the agree button it pops-up another radwindow thats sole purpose is to make them pick certificate agian and then it save info and close immediately. however it is not prompting them for the certificate. the application is HTTPs and asks for it when they start session and the clearauthenticationcache has worked for me on web pages but for some reason not with radwindow. Don't know if I need to do something different.