I'm running Win2k RRAS hosting a VPN connection. It works fine with Win2K clients, but I have some, not all, Win Xp clients who get an error 721 - no response from server when they try to authenticate. I can connect with my Xp boxes from my house just fine. Apparently this is a known issue with Xp, and M$ has a registry fix that's supposed to help, but it doesn't. Anybody have any experience with this?