I recently upgraded my home pc to dual boot xp pro and win2k pro. Under Win 2K I can connect to my office VPN fine everytime, but can't connect at all under XP. The office lan is running NT Server 4. Also, I am able to ping the VPN server with no problems from the command prompt in XP. The error message is as follows. Error 800: Unable to establish the VPN connection. The VPN server may be unreachable, or security parameters may not be configured properly for this connection. Any suggestions?