i had this problem and the solutiuon is either the wrong ip address is typed or that you have enable client connections under network configuration -----Original Message----- From: Julius Orayo [mailto:jorayo@xxxxxxxxxxx] Sent: 14 August 2002 17:10 To: [ISAserver.org Discussion List] Subject: [isalist] VPN Connectivity http://www.ISAserver.org Dear All, I am in the process of implementing a VPN through my ISA Server. However, when remote computers try to connect to my internal machine, the connection seems to be very unstable. At the event log the following message appears: "A certificate could not be found. Connections that use the L2TP protocol over IPSec require the installation of a machine certificate, also known as a computer certificate. No L2TP calls will be accepted." Any ideas on how to solve this problem please? Julius Orayo Med-X Tanzania www.medex.co.tz ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: ian@xxxxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')