I know this is a really old thread but when you run sysprep you need to add the -quiet switch. If you don't add -quiet sysprep ignores the sysprep.inf file. I usually create a run_sysprep.cmd file and launch sysprep from that contains the following: @ECHO OFF TITLE Running Sysprep... DO NOT CLOSE THIS WINDOW sysprep.exe -quiet -mini -reseal -shutdown EXIT