The aging Xbox 360 will lose support for Halo game services, it has been announced, but you’ll still have time to upgrade to a newer console. Microsoft plans to end support for the Halo games released on the console, but players will still be able to play the titles — though, it notes, some game features will stop working.

The Xbox 360 was released in 2005; it is quite obsolete at this point, but you may still have one around. 
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https://www.slashgear.com/xbox-360-will-lose-halo-game-services-but-you-still-have-time-to-upgrade-20651897/