I've created a self-signed certificate in IIS7. Then I exported this certificate to a .pfx and then installed it on the client machine's IE browser. Then I set "Require Client Certificate" on the server's IIS configuration. When I try to visit the site with IE, a dialog box comes up for me to choose a certificate, however, there are no certs in that dialog box. When I click "OK" without choosing any certs, I get a 403 forbidden error. How can I make this work? Appreciate the help in advance.