When you log off from a Windows Remote Access Service (RAS)
client, any RAS connections will be disconnected automatically. To remain
connected after logging off, you may enable the KeepRasConnections key in
the registry on the RAS client.
Note: This behavior is different from versions of Windows NT RAS earlier than Windows NT 4.0; earlier version of Windows NT remain connected when logging off from the local computer.
This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
How to back up and restore the registry in Windows
To modify the behavior of RAS when logging off, change the value of the
following registry key:
Range: 0 or 1
Default: 0 (disabled)
You should restart the computer after making this change.
By default, when logging off, Windows closes all RAS connections
opened during the session. If this registry key value is added and set to
1, the system will not close RAS connections when logging off. This
registry key value does not appear in the registry unless you add it.
Changing the KeepRasConnections registry key to remain connected after you log off from a RAS client is not supported in Windows Vista."