Build list legend
|Version of Microsoft Windows|
|Initial release||Windows 8 (NT 6.2) codebase|
(22 November 2013)
(with original Xbox One console)
|Latest release||Windows 11 (NT 10.0) codebase|
Xbox OS (codenamed Durango) is a MinWin-derived firmware developed by Microsoft to run on the Xbox One and Xbox Series X/S consoles, which was released with the original Xbox One console on 22 November 2013. Versions before November 2015 are based on the Windows 8 codebase, whereas later versions are based on the Windows 10 and Windows 11 codebases.
It includes a host OS that contains a heavily-modified version of the Hyper-V hypervisor. It also includes two partitions, namely Exclusive Resource Access (games) and Shared (multitasking), that feature custom virtual machines reserved for running under different environments and applications.