On the screen, select the second option: "Download the Windows Assessment and Deployment Kit... for installation on a separate computer" .
:On the offline computer, run the adkwinpesetup.exe from your copied folder. This time, select "Install... to this computer" . It will detect the local files and complete the installation without needing internet. Critical Prerequisites adkwinpesetup.exe offline download
For a true offline experience, you need the or the offline layout generated via the command line. On the screen, select the second option: "Download
If you downloaded a dedicated adkwinpeaddon.exe , run: On the screen