Before I bought a new xbox 360 I could play just fine on my old console. Now that I have installed everything and re downloaded all my DLC. I go into join a SWAT match and It loads in all the players and then lets me vote on a map. THEN it acts like its going to start the match and boots me all the way out to the start screen.
I cannot play Ops either nor join any of my friend’s personal matches.
Is this the only game giving you issues on your new console?
Yes. It is the only one giving me issues. Everything else plays fine.
I also get a NAT warning but it has never interfeared with my game play at all+
Update:
Just looked at my router settings and and It doesn’t seem like I can even change my NAT settings through my router.
This is also a shared connection with my friend and neighbor whom also have a 360 that is not having any NAT or connection trouble.
Remember. I a not having any trouble with connecting to live. It is just playing any multi player match on Halo 4
Bump Please Help I wanna play again… reach is getting boring 
Wow expected more help from this forum but apparently its dead. I guess I will be taking my Halo 4 back and get my money back for it as no one here wants to help…
Just wondering if anyone cares?
Big Update:
I have updated to a new router that allows me to have an open NAT so the NAT error is no longer a problem. Still getting booted though so I would like to resolve this issue soon.
> Is this the only game giving you issues on your new console?
Hello
Yes it is the only game doing this.