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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

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 StartStart button, 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.  User Account Control permission 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:
Properties

Article ID: 929853 - Last Review: 03/17/2007 01:07:50 - Revision: 1.4

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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