I have 2 people who authenticate to a Windows 2000 VPN server. Both client systems are Windows XP. I have them set up to connect via a unique static IP address, which works fine if one or the other is not connected. If either one is connected, the other one gets an error 721. No one else of the potential 18 VPN users have any problems. Do you have any suggestions as to what can cause this? All help greatly appreciated!