Halo 4 servers "Not available"

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For some reason, I cannot do anything online in Halo 4. I cannot access War games, Spartan Ops or anything else that may be online. In War games it says “The Halo 4 servers are not available. Please try again later. Matchmaking has switched to using the default playlist”. Spartan Ops says another message about servers being “unavailable”.

Of course I tried all the normal shiit like restarting modem, rebooting xbox, resetting cache bla bla bla. I’m connected to xbox live and I’m able to play any other game online. Ports and NAT are open and all is good.

It’s been like this for over a week now and its complete bullshiit! Anyone else got this problem? Thanks