I have a web application deployed onto IIS 7 (Version 7.0.6000) on a Window 2008 Server using an SSL certificate (issued by Equifax). The web application is accessible over https using IE, Firefox and Chrome. However on Safari, I first get a pop up to choose a certificate and upon choosing a valid one, i get the following message:
403 - Forbidden: Access is denied. You do not have permission to view this directory or page using the credentials that you supplied.
We have had a slight issue with time on that server where is tends to lag behind by a minute, but I don't think that would ONLY through out SAFARI and not any other browser.