My environment consists of Server 2012 DCs and Windows 7 Pro clients. I have a simple startup script that runs a silent installation that I've deployed via Group Policy. The script works great. The only thing I would like to change is the behavior of the Windows logon screen. On startup, after about 5 minutes at the "Please Wait" screen, the user is presented with the CTRL+ALT+DEL screen. My issue with this is that the installer takes about 20 minutes to run. So, there is a chance that the users can successfully log into Windows before the installer has a chance to finish, launch the application that is being upgraded by the script, and corrupt the installation.
Is there any way to delay the users being able to log into Windows until the script and installer finishes? I've tried starting the script with the "Start /w" command and switch - no luck. It behaves exactly the same. I've also experimented with the GP setting for "Maximum Wait Time for Group Policy Scripts". I changed the threshold to 30 minutes and it didn't make any difference. I would much rather have my users call the help desk and complain that their computer is stuck on the "Please Wait" screen than to have them prematurely launch the application before it finishes installing.