Hi, guys, I have been trying to push windows update WindowsXP-KB931836-x86-ENU.exe to each workstaion by using group policy. I have setup a computer startup batch file. The problem is I saw that installation window appear on only some of the workstations after turn on the computer. I have been using this new group policy for two days. Any idea? This is the batch file: @echo This is a script created by Joy Yu. Please continue the installation. @echo off call "\\myservername\SHARE\IT\WindowsXP-KB931836-x86-ENU.exe" Thanks! Joy