You are connected to a remote network over a virtual private network (VPN) connection from Windows Vista. However, every time that you try to access a local resource on another computer, you are prompted for authentication. You expect that stored credentials for the resource that you are trying to access will be used for local access.
This issue occurs because of a design change in Windows Vista. The credential manager in Windows Vista presents the remote access credentials for authentication to the local resource. These credentials are not accepted, and you are prompted for authentication.
To resolve this issue, you must use the Fully Qualified Domain Name (FQDN) of the local resource to access it. The following example shows a sample scenario.Example
NetBIOS name: Resource_Computer
Domain name: Our_Domain
Root Domain name: Local
In this scenario, you must use the following FQDN to access Resource_Computer: