DUNS ERROR 800

800 - Unable to establish the VPN connection. The VPN server may be un-reachable, or security parameters may not be configured properly for this connection.

This error may occur if a Virtual Private Network connection is specified, but fails to authenticate. See this Microsoft how-to article on using Virtual Private Networks for Secure Internet Data Transfer.

Some of the reasons this error occurs include:

• The PPTP or L2TP server is not reachable. A firewall could be blocking traffic; the server name specified in your connection could be incorrect.
• Your connection configuration might prevent IPSec from establishing a secure channel with the server. A network component such as Network Address Translation (NAT) or a firewall might be blocking IPSec traffic.

Verify whether you have a current machine certificate or that the pre-shared key is correct. Check the security settings in the properties for your network connection.

Contact the administrator of the remote server for additional support.

This error applies to Windows 2000 & XP.

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