I tried to connect to VPN with Windows 8 following the directions on this site. When I tried to connect, Error 812 popped up saying, "The connection was prevented because of a policy configured on your RAS/VPN server. Specifically, the authentication method used by the server to verify your username and password may not match the authentication method configured in your connection profile. Please contact the Administrator of the RAS server and notify them of this error."
What do I do now?