Wired connection don't work, but wireless do.

Make sure that your xbox account is connected to a Xbox live membership. If so go sign out, and then sign back in and it should Work.

It sounds like your internet connection is the problem. Ensure whether your internet is wireless or wired that it is connected properly.

If wired that it is plugged in both your xbox and internet modem, and that it is not the ethernet cable itself. (they can stop working for one reason or the other).

If wireless that your wireless adapter on your 360 is plugged in all the way and that the information in your xbox network settings is all correct.

I made it an unsecured connection and everything worked. Not ideal solution, but it worked.

The firewall on your laptop may not work and/or you may need a software update either on the pc or xbox
those are the most common
your set up is ok

I would suggest power cycling it, both the xbox and the router, sometimes routers can be funny with there connections.

try this

As wireless works ok and you have the same problem with both USB ports then it's possible that the wired remote has a loose or broken connection wire.

This also happens with wired headsets, in many cases it means replacing the controller.

I had the same problem with my Xbox and Netgear DG834 v4 (wired) router. I bought a Belkin F5D7632 wireless router and that did not work either. I then bought an Xbox wireless adapter and it connected ok. I do not know why the wired connection does not work. The cable length is 10m.

hey im having almost same problem, i got a motorola s8vs SURFboard cable modem with a battery in it and my ethernet ccord runs from my modem to my xbox but yet my xbox cant read my ip adress, why is this.. do you know?

Is the connection wireless or wired? wired it should work fine but if it is wireless you may need to re set up your router and or the wireless settings in your network settings.