Supress the network location prompt on an unattended installation

In Windows Vista and 7 when doing an unattended installation, there is a bug in the process in which the network location specified in the unattended xml file does not get applied. Here's how to supress that dialog.

The easiest way to do this is by adding a RunSynchronousCommand to RunSynchronous section in the x86_Microsoft-Windows-Deployment_neutral block in the specialize phase of your unattend.xml file.

To stop the Network Locator Prompt from appearing add a fourth RunSynchronous command to RunSynchronous block (specialize) with the following details:

• In the Description field, enter something to identify the task - like "DisableNetworkLocationPrompt".
• In the Order field enter 4 (if you are editing the BDD 2007 created unattend.xml file) or 1 if it is your first RunSynchronous command.
• In the Path field enter the command line (as one complete line) - reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\CurrentVersion\NetworkList\Signatures\FirstNetwork" /v Category /t REG_DWORD /d 00000001 /f
• In the WillReboot field enter Never

When this command runs as part of the build or deploy process, the Network Location Prompt will be suppressed.

Edit: After trying a few things on Windows 7, I found that the above didn't work. It may work on Vista, but not 7. Here's the fix that worked for 7:
In the Path field enter this command line instead: reg add "HKLM\SYSTEM\CurrentControlSet\Control\Network\NewNetworkWindowOff /f"