I have two Windows 8.1 Enterprise images, x86 and x64. I created custom images (integrated updates, tweaks, etc) for both. I used the same options for the Autounattend.xml, both which I did not check anything for the product key. I tested both images, x64 works fine, and gets to the screen showing your hard drives. The x86 is asking for a product key. I don't understand why if x64 didn't need one. I'm new to Windows 8 installations by the way, but not any previous versions of Windows.

add a pid.txt with the key to the ISO

Alternatively you could mount both images via dism and run the set-productkey.

http://technet.microsoft.com/en-us/library/hh825157.aspx

Dism /Image:C:\test\offlinex86 /Set-ProductKey:12345-67890-12345-67890-12345Dism /Image:C:\test\offlinex64 /Set-ProductKey:12345-67890-12345-67890-12345

Edited December 4, 201312 yr by MrJinje

ok thank you. Do you know why the x64 version did not ask or a key?

ok thank you. Do you know why the x64 version did not ask or a key?

My guess was that you had two different iso's and the x64 was volume media and the x86 was not. Not a problem, simple fix.

FYI'd use the GVLK for installing/testing so that you don't waste your real activations until you are ready. Add it to your autounattend.xml

http://technet.microsoft.com/en-us/library/jj612867.aspx

ok thank you. Do you know why the x64 version did not ask or a key?

My guess was that you had two different iso's and the x64 was volume media and the x86 was not. Not a problem, simple fix.

FYI'd use the GVLK for installing/testing so that you don't waste your real activations until you are ready. Add it to your autounattend.xml

http://technet.microsoft.com/en-us/library/jj612867.aspx

The GVLK solution is precisely what I needed, as I often fix client's PCs and they have their own keys. Thank you for the direction.