An old build of Windows Core 'Polaris' has leaked online

Not as exciting as it sounds, though.

What you need to know


An old build of Windows Core OS has leaked.
The leak is of a barebones Polaris SKU.
The build is for ARM32-based PCs only.


An early build of Polaris, a canceled SKU of Windows Core OS, has leaked online. The build is from early 2018, and includes nothing but the bare core OS, meaning there's no composer (shell) or apps present. Windows Core OS is a modern version of Windows that powers HoloLens 2 and the upcoming Windows 10X, and has been in the works for many years.

We've covered Windows Core OS extensively in the past, but for those out of the loop, the Windows Core OS project aims to create a modular, universal Windows OS that guts legacy features and components in favor of contemporary user experiences. As a result, the OS is more secure and performant on low-end hardware, with better battery life and faster OS updates.

Because Windows Core OS has been in the works for so long, the project has gone through many di...