How will older browsers without EV support behave on sites with Entrust EV SSL Certificates?
top) Browsers without EV support will continue to behave as they do today. As long as the certificate was issued by a CA trusted by the browser, the lock will close as expected. In most cases, website support for both older browsers and newer EV browsers will require the installation of a cross-certificate on the web server which was issued by a root CA already embedded in older browsers. The cross-certificate will certify a newer EV specific issuing CA as trusted, and the actual web server site certificate will be issued from that issuing CA.