Windows 11 build 21327

10.0.21327.1000.fs_prerelease.210226-1437
Build of Windows 11
No image available
OS family
Architecture
Compiled2021-02-26
Timebomb
Works in

Windows 11 build 21327 is the earliest known build of Windows 11. It was mentioned in an issue posted to Visual Studio's Developer Community by a Microsoft employee on 11 March 2021.[1] As the build tag is repeated multiple times throughout the thread, it is unlikely that it is a typo of 21327.1000.rs_prerelease.210226-1437.

This build is one out of two known builds to be compiled from a branch with the fs prefix, the other being build 21380. The prefix stands for Fire Steel, the codename for an internal Microsoft tool related to Windows 11 development.[2]

References[edit | edit source]