Windows 10X build 20279.1002

Windows 10X build 20279 is an RTM candidate build of Windows 10X. This build was released on 14 January 2021. It was later withdrawn as Microsoft tested builds 20280 and 20281 afterwards, which were never released after development stopped in February 2021.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 Manganese semester as their base, this build uses the Iron semester. This release of Windows 10X can be composed using ImageApp and run on Hyper-V.

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