Check your Xbox presence
Appear online in Xbox and keep Halo open. If you’re already appearing online, switch to appear offline and then back to appear online. If you still look offline, restart the Xbox app and reopen the game.
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ReloadAppear online in Xbox and keep Halo open. If you’re already appearing online, switch to appear offline and then back to appear online. If you still look offline, restart the Xbox app and reopen the game.
Confirm that Nylith is your Xbox friend and that every required option in your Xbox privacy settings is still set to “Everyone”. Compare your choices with the complete Xbox settings example.
Open Settings → Gameplay in Halo and set File Share Trust Level to Anyone. See the Halo setting example.