I am not sure why but all my users are suddenly getting VPN error 718. As far as I am aware nothing has changed on the Firewall or Servers. Unfortunately all articles seem to point to PPPTP passthrough which is a red herring because that would only affect one client. We use L2TP/IPSEC with MS CHAPV2 but before I start giving all details of my VPN connection, it would be worth while having an expert tell me what they would need to know.
thanks
Nonetheless, I supposed this step thru check is done in order to surface more symptoms of the sudden 718 occurrence surge. It seems to allude to n/w changes in the infra if the config has not been changed or patch / revision push down is of non-existence. Noted the older OS but worth quick glance on the troubleshooting steps - http://support.microsoft.com/kb/162847/EN-US