Well I have managed to muddle through my issues and thought I would share my findings. In creating the autounattend.xml through the WSIM/WIAK I found two problems that where causiing my issues. 1. In creating a x86 answer file, by using the menu item INSERT > Syncronous command the processorArchitecture was being inserted with an amd64 tag causing the sychronous commands to be passed over. You need to use the components panel (Lower Left) and add the appropriate type there. 2. The variable %systemroot% that work previously in WSIM/WIAK no longer works. You must use the legacy version %windir% to repesent the drive:\Windows folder. After making these adjustments my installs are once again UNATTENDED Hope this helps anyone having similar issues and good luck