One of the new features of Windows Server 2012 is the “invoke-gpudate” cmdlet in powershell 3.0.
With this cmdlet you can force any single client to do a grupdate without having to access the client directly, really cool i think!
To make it easier i wrote a short script, that triggers the gpupdate on only one Client with a two minute delay:
function Pause ($Message="GPudate successfully sent. Computer will update Policy in 2 Minutes. Press any key to close")
write-host –NoNewLine $Message
$null = $host.UI.rawUI.ReadKey("NoEcho,IncludeKeyDown")
$computername = read-host "Please type in FQDN of the Computer to update policy (e.g. pc4711.domain.local) "
invoke-gpupdate -computer $computername -randomdelayinminutes 2 -force
This script can be run without having any server 2012 installed, all you need is Windows 8 with installed Remote Server Administratio tools for Windows 8.
More info on Technet