VPN works on XP client but gets 721 error on 2000 client

[Ben]

We have set up VPN for several of our desktops and
laptops. VPN connects no problem from XP. VPN
connections are the same for 2000 machine, but connection
times out ang gives 721 error. We have removed
firewalls, disabled virus checker, and tried the same
physical connection to the same physical port. As far as
we can tell EVERYTHING is the same other than it works
for XP and not for 2000. What are we missing?

 

[Bryan Deyak]

I have the same 721 error. I support multiple Windows
2000 laptops and when people are dialing into our VPN they
will get a 721 error. The error happens out of no where.
One day they will connect fine, next day they will get the
721 error. Is there any known fix to get rid of these 721
errors? ANy information is greatly appreciated.