Had a customer needing there computers to get computer policy and certificates a lot of there users were not getting the update computer policy after a reboot so I made the suggestion lets use a login script so I created a login.bat file and dropped in the following text
gpupdate /target:computer /force
I was targeting the computer policy just to save time on the script. I then went into AD and added the script to the users. User Properties->Profile->Login Script
I copied the script onto there domain controller %SystemRoot%SYSVOLsysvolscripts
As users login they were getting the updated group policy worked like a champ.