MW3 not working

[quote user="IX WaCkEd IX"]

No you didnt get banned cause it was saying that the first day I got the game,I waited five minutes and i was back on.It think its a server issue just be patient.

[/quote]

I haven't recieved this message not once since release day.

I’m couldn’t really figure out how to do these solutions if you could give me steps or refer me to a video that would be great

Hey DayrHl, maybe tell Microsoft to put old cods on actual GOOD servers and maybe these games will run well. Play solo online and no issues. Moment you add a friend and you cant play whatsoever. Super annoying and ruins the experience. Giant waste of time just like the new Call of Dutys. Might as well play Roblox, actually works well

Hi, my name is Marvina and I will be happy to help you.

I'm sorry you have this problem, researching on the internet I was able to find that in the forum, the independent advisor Nkosana, recommends the following steps for a solution.

Here are some tips to troubleshoot your game:
1. Check for known issues.
2. Restart the game.
3. Power cycle your machine.
4. Test your network connection.
5. Try using a different profile.
6. Delete and re-add your profile.
7. Delete the local save and sync with the cloud again.

For more details on the above, please visit: https://support.xbox.com/help/games-apps/troubleshooting/game-issues-resolution

Information source (credits):
https://answers.microsoft.com/thread/d9d76ded-047d-4724-8240-db0325f614de

Best regards,
Marvina.

Are you attempting to play regular multiplayer? Do you have gamepass core or ultimate? You need one of those to play online. Gamepass core is the equivalent of what Xbox Live Gold was.