Hi,

We have been using the "standard" XP/Windows VPN client with our ISA 2006 Enterprise server for years with no real issues. I've recently decided to start rolling out a new client using Connection Manager Administration Kit (CMAK) so we can efficiently map/disconnect mapped drives. Tested with a small group of users and no problems at all. Have now rolled the client out to about 10% of our workforce and we are getting intermittent VPN connectivity issues and I'm sure it's related to our new client. The Remote Access Service stops running and only way to start it up again is to restart our ISA 2006 server. Proxy and firewall services are still fine. 

VPN protocol on both old and new clients are PPP.

I've noticed the new client also has software compression enabled where as the old one does not. Could software compression cause this problem?

Hi,

Is there any error in Logging?

You could also check the blog below.

Using CMAK to Configure ISA Server VPN Clients

http://forum.persiannetworks.com/f80/t33486.html

Note: Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

Best Regards,

Joyce