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ITsVISTA KB-Link: KB959220

When you use Group Policy to create a VPN connection item, the IPv6 and IPv4 protocols may not be bound to the VPN connection item when you log on to the domain from a Windows Vista-based client computer

In a network environment, you configure a virtual private network (VPN) connection item by using a Group Policy setting. You select Create or Update as the action for the Group Policy to perform. When you log on to the domain from a Windows Vista-based client computer, the Group Policy setting is applied successfully, and you see that the VPN connection item is created in the Network Connections. However, when you try to use this VPN connection to connect to a network, the connection may fail. If you right-click the VPN connection item in Network Connection and then click Properties, you see that the Internet Protocol Version 6 (TCP/IPv6) and Internet Protocol Version 4 (TCP/IPv4) check boxes are not selected.

Notes:

  • If the action for the Group Policy is “Create,” IPv4 and IPv6 are disabled when the connection is created. If you manually enable IPv4 and IPv6, they will stay enabled even after you change the connection in a Group Policy Object and then update Group Policy.
  • If the action for the Group Policy is “Update,” IPv4 and IPv6 are disabled every time that the Group Policy is updated on that workstation.

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB959220.

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