1. . Logon to Windows using an account with administrator priveleges.
2. . Control Panel → Network and Sharing Center → Setup up a connection or network → “Connect to a workplace” (OR “Set up a dial-up connection”).
3. . Check the checkbox to “Allow other people to use this connection” (so that the owner of the VPN/DUN configuration will be System and not your individual user).
4. . Complete the wizard and save the connection.
5. . Logout (don't just lock the screen).
6. . Press Ctrl-Alt-Delete to log on and you will be presented with the logon screen for the user that last logged in. PressEsc or clickSwitch User to view other logon options.
7. . There will now appear a blue button near the lower-right corner, just to the left of the red Shut Down button.<br /> Click the blue button. If you have more than one System-owned VPN/DUN configuration, then all of them will appear here as buttons that can be clicked, in which case you click the one you want to use.
8. . If prompted, type the username and password for the DUN connection and click the round, blue button to connect. <br /> A dialog appears, showing the progress of the connection attempt.

After the connection is established, Windows will use the same credentials to log into Windows. If that fails, the VPN/DUN connection remains active, and you will be taken back to the Windows logon screen to submit Windows credentials.

Your laptop should now have the new credentials. You can logout, then log back in normally to the domain.

• http://level2it.wordpress.com/2009/11/05/log-on-using-dial-up-connection-is-gone-in-windows-7/
• http://support.microsoft.com/kb/818088

– Main.FredPettis - 2012-06-06