http://www.ISAserver.org Hi all, I am having a VPN connection problem with XP thru ISA VPN. I got the error 721 after the verification of user name and passowrd. I only have this problem with XP. With w2k, it works great. Any idea? Does it have to do with XP clients setting or server end? I have ISA\SP1 installed on win2k\sp3. Thanks!! D