So it’s pretty easy to create a VB script popup during a task sequence when it is running in WinPE, however it’s a bit more difficult to have a VB script popup to show to the user when the task sequence is still running in the full OS – eg Windows 7 with a user logged on.

This is one method that I used to get it working, maybe there are easier or cleaner ways, but this one works well for me. We can achieve something like this:

In the task sequence, somewhere after the MDT Use Toolkit Package step, add a command line step:

Use the following command line:

“%ScriptRoot%ServiceUI.exe” -process:tsprogressui.exe %SYSTEMROOT%system32wscript.exe “%ScriptRoot%Warning.wsf”

This is the warning VB script (Warning.wsf) that I’ve used in my example, you just need to put this in your MDT scripts folder:

<job id=”setEnv”>

<script language=”VBScript” src=”ZTIUtility.vbs”/>
<script language=”VBScript”>

Dim oTSProgressUI
set oTSProgressUI = CreateObject(“Microsoft.SMS.TSProgressUI”)
oTSProgressUI.CloseProgressDialog()

MsgBox “Popup warning message to go here. This is shown in the user session.” & chr(13) & chr(13) & “Press OK to continue.”,0, “Warning”

</script>
</job>

There is also a bit of info over here on ServiceUI.exe – http://blogs.technet.com/b/cameronk/archive/2011/01/25/can-i-use-serviceui-exe-to-launch-other-programs-besides-the-udi-setup-wizard.aspx