I am currently trying out PPTP in a NT environment, but I can't log on to the PPTP server which is a NT4 server with SP6. I get various error messages such as 629, disconnected, 741, local computer doesn't support encryption and more. I have not been able to test any VPN connection because I have not been able to establish contact between the computers. I can ping the server but not connect to it (via modem and on LAN). I am trying to connect to the server both from a LAN and a modem, with no results.

I have tried to reinstall both the operative systems and TCP/IP protocols on all machines without any result.

I have no idea what the problem can be, I have used the manual that Microsoft has published (Implementing VPN networks) and followed it exacly without success.

Is there anyone there that can help me with this problem?