Halo MCC cutscene missions are all unplayable in co-op in the newest update : r/halo
Halo 1 - Does Splitscreen Still Work On The PC Version Of MCC?
Halo: The Master Chief Collection Local Splitscreen on PC. : r/localmultiplayergames
Halo Infinite co-op beta: How to play, download, sign up, and start date | Windows Central
Any way to add a guest player in Halo MCC to play a local co-op campaign? Both controllers are already paired but I don't get any option for it : r/SteamDeck