I have created a startup.vbs script and added it to the GPO but for some reason it isn't being processed. Here's what the startup.vbs script looks like:
Set WshShell = CreateObject("WScript.Shell") WshShell.run "\\DomainController\netlogon\LSclient.exe lansweeper 9524",0
Is "lansweeper" the name of the server? Have you copied lsclient.exe to domaincontroller\netlogon? When you manually try to run lsclient, does it work?
You can see the list op applied GPO's on the client with "gpresult" You can force to apply the policies with "gpupdate /force"