I deployed a WCF service in IIS7. This WCF requires client cert. When I browsed the SVC using IE, I got error page: NotSupportedException: The SSL settings for the service 'None' does not match those of the IIS 'Ssl, SslNegotiateCert, SslRequireCert, Ssl128'.
I should select "Require client certificate" in IIS7 to match the WCF configuration. Ignore or accept client certificate does not work.