Windows 10 build 9900

Windows 10 build 9900 is a build of Windows 10. This build includes major updates to the interface, including changing the taskbar to the black color used in the RTM and additionally, removed the transparency effect. This is also the first leaked build to include Cortana. It is also the first leaked build compiled in the "fbl_awesome1501" lab.

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