System Link isn't working

I’m trying to play system link using the copies Halo: Reach and Halo Anniversary. But when we play firefight on the Installation 04, it says that player is unable to load content. What does this mean? I thought you were you able to play with these copies unless you play the Anniversary maps (I have the anniversary maps myself).

if you are playing via system link then all players must have the DLC. but might I ask you are you playing on multiple xbox’s or just yours.

Multiple Xboxs’

then yes all consoles must have DLC

I got the same thing. And with FF, i believe only four players can play.

> I got the same thing. And with FF, i believe only four players can play.

Yes, you’re right, only four people can play total.