Microsoft KB Archive/929853

= You cannot access network resources and domain name resolution is not successful when you establish a VPN connection to the corporate network from a Windows Vista-based computer =

Article ID: 929853

Article Last Modified on 3/17/2007

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APPLIES TO


 * Windows Vista Ultimate
 * Windows Vista Enterprise
 * Windows Vista Business
 * Windows Vista Home Premium
 * Windows Vista Home Basic
 * Windows Vista Starter
 * Windows Vista Ultimate 64-bit edition
 * Windows Vista Enterprise 64-bit edition
 * Windows Vista Business 64-bit edition
 * Windows Vista Home Premium 64-bit edition
 * Windows Vista Home Basic 64-bit edition

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SYMPTOMS
You establish a virtual private networking (VPN) connection to the corporate network from a computer that is running Windows Vista. When you try to access network resources, you experience the following symptoms:
 * You cannot access network resources.
 * Domain name resolution is not successful.



CAUSE
This issue can occur if one of the following conditions is true:
 * The computer is not joined to a Microsoft Windows domain. For example, you establish a VPN connection from a home computer to the corporate network.
 * The computer is configured to use TCP/IP version 6 (TCP/IPv6). Additionally, TCP/IP version 4 (TCP/IPv4) is not installed on the computer or is not enabled on the VPN connection.
 * TCP/IPv4 is installed on the computer. But a Domain Name System (DNS) suffix cannot be obtained for the TCP/IPv4 address.

This issue occurs because Dynamic Host Configuration Protocol version 6 (DHCPv6) does not support connection-specific DNS suffixes. Therefore, DNS suffixes must be configured by using TCP/IPv4, either manually or automatically.



WORKAROUND
To work around this issue, manually configure the DNS suffix for the TCP/IPv4 address in the VPN connection. To do this, follow these steps:
 * 1) Click Startvistastartbutton.jpg], right-click Network, and then click Properties.
 * 2) Click Manage network connections.
 * 3) Right-click the VPN connection that you want to configure, and then click Properties.
 * 4) securityshield.jpg] If you are prompted to confirm that you want to continue, click Continue.
 * 5) In the This connection uses the following items box on the Networking tab, click Internet Protocol Version 4 (TCP/IPv4), and then click Properties.
 * 6) Click Advanced, and then click the DNS tab.
 * 7) Specify the DNS suffix for the connection, and then click OK three times.



MORE INFORMATION
For more information about TCP/IPv6 and about Windows Vista, visit the following Microsoft Web sites:

http://technet.microsoft.com/en-us/windowsvista/aa905081.aspx

http://www.microsoft.com/technet/community/columns/cableguy/cg1005.mspx

http://www.microsoft.com/technet/community/columns/cableguy/cg0905.mspx

Keywords: kbprb kbexpertiseinter kbtshoot KB929853

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