Gertjan Jongeneel It should work if you activate in the image. But if it doesn't, i would just create a scheduled task that runs the slmgr at startup. The activation ID will be the same for all vdis and the MAK will already be installed. It's easy enough to check if you even need to do this. Copy your disk, add copy to pvs, create maintenance version, fire it up and install/activate the MAK, close the disk, promote to test or production (whatever your process is) fire up on some vdis, log in and confirm with slmgr /dli. The only thing i don't know if you use the scheduled task route is if it counts as a new activation each time you start up. Our MAK came with 5,000 activations, which would not be enough if each reboot counted as a new activation. I am thinking you won't have to do that though.