PC is behind an ISA server and is not running any firewall of its own. I set up a VPN connection on this computer probably a year ago. It suddenly just stopped working. I get “Error 800: Unable to establish the VPN connection”. In fact, I can’t make ANY VPN connections from this computer. ISA doesn’t show any traffic occurring when I try the connection. But I can use telnet to connect to port 1723 on the VPN server (ISA does show this traffic). It’s like the VPN component of Windows broke or something. Has anyone ever seen this?
