Windows 10 build 9906

Windows 10 build 9906 is a build of Windows 10, this build was leaked on 29th of January 2015. It is very similar to build 9903, and as such, does not feature many changes other than bug fixes.

UEFI BIOS
This build has to be installed on an UEFI BIOS, otherwise it will hang booting setup.

Window thumbnail color error
Window thumbnails on the taskbar do not change color, but the user can change it after the computer restarts.