On my current PC, I've had a history of Certificate Errors when trying to make purchases over Steam. Usually I make the purchase on my Mac instead. Now I'm seeing a Certificate Error when I try to log into Battle.net. (I've not logged into Battle.net for a couple of years, before using this computer.) I consistently get java warnings for a variety of sites: "the Certificate Issuer for this site is untrusted or unknown, Do you wish to proceed?" I have selected "View Certificate" and have opted to install the Certificate, I have opted to proceed, but this problem continues to be an issue. Anyone have any ideas on how to correct this? I've been searching online and have yet to find an answer to will correct my problem. I have a feeling it's something on my computer. Thanks!