Xbox One OS build 8422

Xbox One OS build 8422 is a build of Xbox One OS. It was originally shared in the form of a development kit recovery image under the VHD format, and is based on a heavily stripped-down version of the Windows Preinstallation Environment, leaving only the bare essentials required for launching Xbox One games such as minimal GDI+ and USER APIs.

It notably contains an early version of the Xbox One dashboard (referred to as the Xbox Compositor), which is merely a simple list of installed applications and includes a small number of configure settings along with additional debug information detailing the console's specifics. The build comes with a driver for an AMD Radeon HD 6300 engineering sample and contains several internal development tools for Xbox One applications. By default, the preinstalled image contains two applications used for testing the Kinect's hardware. On startup, multiple services that are required for full development kit functionality (such as an FTP server and a Telnet client) are launched alongside the compositor and the standard Windows command line interface.

The original leak does not have a functional Dashboard, and therefore requires the user to extract the virtual hard disk included within the recovery GDF file located at the root of the disk. The build is best utilized with an Xbox 360 wireless controller, although it is possible to fake controller input by pressing the F12 key and using the keyboard to navigate through the interface.