In short: Halo games for the Xbox 360 have been around for a long time, keeping us entertained for hours since their launch. However, starting January 13, 343 Industries will shut down and cut online services for many Halo games, but that won’t stop you from playing single player modes, as well as split screen, Forge, and LAN modes.
Halo support FAQs have been updated to reflect which services will be disabled in Halo games for Xbox 360. These include Halo: Reach, Halo 4, Halo 3: ODST, Halo 3, Spartan Assault, Halo: Combat Evolved Anniversary, and Halo Wars.
After January 13th, services such as Matchmaking, File Sharing, MOTD (Match of the Day), Challenges and Additional Services will no longer be available. For Halo 4 and Halo Reach, service logging and player customization will also stop working, but these services will still be available in Halo 3 and ODST.
Achievements in Halo 3, Halo 4, and Halo: Reach will also be affected, but not all. Only those that require matchmaking, are based on challenges, or are associated with specific actions will stop working.
You should be aware that backward compatible versions of these games for Xbox One and Xbox Series X | S will also stop working. Halo: The Master Chief Collection and Halo Wars Definitive Edition won’t suffer the same fate. The titles featured in the compilation and DE use different online services, which means you can still play them the same way you did before.
While some may not like this news, we must bear in mind that some of these games have been available for 15 years. Since then, we have Halo 5 Guardians, Halo Wars 2, and enhancements to most Halo games for the Xbox 360 and Halo Infinite, so it makes sense to end support for some online features.