Halo (Windows 10 app)
From Halopedia, the Halo wiki
The Halo app was a Microsoft Windows program that provided the latest news, videos, tutorials, featured community content and updated notes, as well as Halo games that were available on Windows, including Halo 5: Forge, Halo: Spartan Assault, Halo: Spartan Strike and Halo Wars 2. It was released as a part of the Halo 5: Forge bundle. The could be downloaded on the Windows store.