Hey guys, last night at a group LAN party, we were having a strange problem with Halo 4, we had 4 Xbox’s, each with 2 players on Split Screen, and we had them connected through a Ethernet Switch, but we couldn’t fully connect to each other, we all were visible on the list but I could only join one of the Xbox’s, and the other 2 could only join each other, and everybody else had a lock over the join button.
The problem was really weird, but we were able to play Halo Reach just fine.
Anybody know any solutions, or what’s happening?
I live really close to my friend who has two xbox 360s. I’ll try to bring mine over and see if I can be of any help.
maybe wrong settings in halo 4 xbox live
Is it possible that this is happening because the other 2 Xbox’s don’t have Forge Island downloaded? (we weren’t playing on it, but still)
Hope it didn’t ruin the LAN 
This happened because the Xboxs weren’t running the same version of halo 4. You need to connect both to the internet to find out which needs to be updated. Then you’ll be able to join. I had the same problem at a LAN tournament a few months ago.
Did all of the Xboxes have the latest TU? The latest TU was released in November.