I have a serious problem trying to connect to the VPN from Windows 8 consumer preview version. It gives me no real reason, just a message saying "Unable to establish VPN". I did see a message somewhere that if I went into the registry and under "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\vpnva"
and changed the "DisplayNamedata" value it would be corrected. I tried that and it didn't work.
I really need this for work so if anyone could provide a solution I certainly would appreciate it!