Firefox V 41.0.2 (about says this version is up to date). I can't login to some secure pages, including My ebay. I get the message "The page you are trying to view cannot be shown because the authenticity of the received data could not be verified." I have the same version of Firefox on another PC, both using Windows 10 and it works! I've tried the suggestions found on this forum, adding ebay to the security settings and clearing history and cache. Any suggestions please?