RDP sessions via SSLVPN failing

Hi, I'm trying to get a terminal server session via SSLVPN going. I browse to a website using https (I use IE 11) and authenticate. I then get presented with a link which when clicked, launches an RDP session to a remote host. This RDP session fails to establish. It worked fine when I was on XP but since upgrading to Windows 7 its failing. I've tried disabling my AV and attempting the...