Windows 10X build 20279.1002

Windows 10X build 20279 is a pre-release build of Windows 10X. This build was released on 14 January 2021 and this build was an RTM candidate, but was later withdrawn due to Microsoft testing builds 20280 and 20281, which were never released after development stopped in February 2021. This is currently the final publicly available build of the operating system before its cancellation in May 2021. Unlike Public Preview builds that used the desktop Manganese development cycle as their base, this build uses the Iron cycle codebase. This release of Windows 10X can be compiled and run on Hyper-V.

The package files for this build were removed from Windows Update on 18 May 2021.