Explanation/Reference:
Explanation:
In the previous versions of Windows, this was accomplished by having the user run GPUpdate.exe on their computer.
Starting with Windows Server® 2012 and Windows® 8, you can now remotely refresh Group Policy settings for all computers in an OU from one central location through the Group Policy Management Console (GPMC). Or you can use the Invoke-GPUpdate cmdlet to refresh Group Policy for a set of computers, not limited to the OU structure, for example, if the computers are located in the default computers container.



References:
http://technet.microsoft.com/en-us//library/jj134201.aspx
http://blogs.technet.com/b/grouppolicy/archive/2012/11/27/group-policy-in-windows-server-2012-using- remote-gpupdate.aspx