During the setup, instead of creating a new virtual disk, select "Use an existing virtual hard disk" and point it to the VHDX file you downloaded from Archive.org.
To understand the significance of the archived build, we first need to understand the project itself. Windows 10X was not just another version of Windows 10. It was a reimagining of the entire operating system.
From a strict legal standpoint, Microsoft holds the copyright to all Windows binaries, including leaked development builds. Microsoft rarely issues takedown notices for legacy beta builds hosted on Archive.org, as they consider them obsolete software of historical value.
