Hi everyone, I'm trying to build my windows 8.1 iso and reduce it with winreducer. What i did is: 1) Open sysprep (shift+f3) and installed office 2013 and other stuff 2) Generalized the image, captured the install.wim with dism and reduced it with winreducer 3) Created an autounattend.xml file to skip the oobe Everything works fine, except from the system that keeps asking me for a serial, even if i have my ei.cfg file set up well. If i don't use the autounattend file, it doesn't ask me for a serial, but if i use it it does. Please note that the serial is the one for the activation, not for the installation. Any idea?