create skipable product key installation ISO

Im not trying to do anything illegal or anything but i want to create a skipable installation iso. Ive been able to successfully do this with windows 8/8.1. The reason for me to do this is I work at a computer repair shop and we do a lot of installs. To keep up a fast pace i find it easier to skip the product key initially and activate it later. I cant seem to find the ei.efg file to edit. Perhaps they changed the format of the install..Thanks for the help

https://www.techmesto.com/install-windows-8-1-without-product-key/

Put the generic Windows 10 product key that everyone gets from an upgrade into an unattended.xml answer file:
Download AutoUnattend.xml For Windows 10

You'll probably have to make different DVDs for Home and Pro, each with their respective product key in the answer file.

ill check out about adding that file thanks for the info...

and perhaps i just jumped the gun and didnt pay close enough attention. if MS allows you to skip the key as is then thats even better for me..... Thanks again. Sorry i didnt notice the do it later option....

Muffy said:

As per DustSailor comment above you can leave key till later, Microsoft are now allowing install of clean win 10 install without a prior version as long as you have the legitimate key for that prior up-gradable version.

I thought that was only for recent Insider builds, not for the versions you get from the Media Creation Tool??