When I will can play mw3 on Xbox one

Hi, it's not certain if/when this might happen- this depends on many factors, including the involvement of the game developer.

I would encourage you to visit the Xbox site for user feedback, https://xbox.uservoice.com/. You can leave feedback, and vote on games you want to see become backward compatible. Hope that
helps!

When I play MW3 I can't play for 30 minutes with out getting disconnected from xbox live can some on help.

Get it all the time, which i put down to just being impatient. If when i turn on the Xbox i hammer the A button when it starts loading then it gives me the same message, but only because i'm trying to run before i can walk. If you get to the menu (skipping
only the two green screen vids with narration) then give it a mo and it will say "reading device" thats it checking your connection. You can then move on to the next menu within multiplayer, and thats where i usually hit a brick wall as it sits there saying
"connecting to Xbox live..." until it crashes telling me the servers are 'offline' despite the fact my friends are playing at the same time!!

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Most annoying and last night it took 10mins before i actually got a game!!!

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Best thing to do for me was to sit and be patient and wait for another "reading device", then i'm finally good to go.

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If things get worse or i get desperate then i'll try Fat Albino's idea (never thought i would say that!)

I had the exact same problem. I have no idea what the cause is but go the dashboard. Delete the latest update for the game and redownload when the game starts up. It fixed the problem for me.

Could be what they said or it could be a temp ban for boosting or something, not sure.