VPN error 800

We have a remote user who is getting this error message when trying to
connect remoyely to our corporate network: "Error 800 - Unable to establish
the VPN connection. The VPN server maybe unreachable or security parameters
may not be configured properly for this connection." I have had them disable
MS firewall and EZ antivirus, but still not success. They are using XP Pro
SP2. No other remote
users are experiencing this. Any ideas will be appreciated.
Thanks

Can you ping the VPN server? if yes, can you telnet the port 1723?

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Davidjc52" <Davidjc52@discussions.microsoft.com> wrote in message news:374D272A-F17E-43CB-97AE-68B73D2F1522@microsoft.com...
We have a remote user who is getting this error message when trying to
connect remoyely to our corporate network: "Error 800 - Unable to establish
the VPN connection. The VPN server maybe unreachable or security parameters
may not be configured properly for this connection." I have had them disable
MS firewall and EZ antivirus, but still not success. They are using XP Pro
SP2. No other remote
users are experiencing this. Any ideas will be appreciated.
Thanks

The VPN server is an ISA server 2004 and will not accept pings on the
external interface.

"Robert L [MS-MVP]" wrote:

> Can you ping the VPN server? if yes, can you telnet the port 1723?
>
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
> How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
> "Davidjc52" <Davidjc52@discussions.microsoft.com> wrote in message news:374D272A-F17E-43CB-97AE-68B73D2F1522@microsoft.com...
> We have a remote user who is getting this error message when trying to
> connect remoyely to our corporate network: "Error 800 - Unable to establish
> the VPN connection. The VPN server maybe unreachable or security parameters
> may not be configured properly for this connection." I have had them disable
> MS firewall and EZ antivirus, but still not success. They are using XP Pro
> SP2. No other remote
> users are experiencing this. Any ideas will be appreciated.
> Thanks
>