Windows 10 install fail with “Modern Setup Host” error

Problem

Trying to install Windows 10 Technical Preview Build 9926 on my Dell Venue 8 Pro with Windows 8.1 and gets the Error: “Modern Setup Host has stopped working”.

Cause

It appears that you should make sure your system has a certain amount of hard disk space available before installing
16 GB available disk space (32-bit) or 20 GB (64-bit).

Solution 1

Having this much free space on a Dell Venue 8 Pro is impossile so one solution is a fresh install by booting from a USB key containing the iso file content extracted  with a software like rufus.
For Dell Venue 8 Pro users: Don’t forget to format the key as FAT32 and to install the 32-bit version of Win10, then press and HOLD the volume down button until the DELL logo screen shows ENTERING BIOS in order to enable boot from USB.
I had an issue with this solution as touch refuse to work during setup, you might want to try with a keyboard and a USB hub.

Solution 2

Unpack the content of the .iso file onto a micro SD Card then plug it into the Dell Venue Pro, open the SD card and run setup.exe from it. The in-place upgrade from Windows 8.1 worked for me. Touch and Wi-Fi worked at first try without any trouble.