with the unattend file? which os are you installing? please give more details and screenshots if possible.
autounattend specifies if the install is for 32 bit or is it for 64 bits. You have to use the correct one. Use Windows Assessment and Deployment Kit.
im using win 10 aio x86 x64 and added to the pro version the unattend (x32 x64) in the panther folder (with dism) the 32 pro install work and skip all the 64 pro not work as he ask for product key and pcname
seems as the only way to get it work in x64 is to put the unattended.xml in system32\sysprep and to restart