Xbox 360 s won't connect to Wi-Fi

Is your 360 connecting to the Internet via Wi-Fi or via an ethernet cable? If connecting via Wi-Fi, the MacBooks may be interfering with the 360's wireless signal. That would cause you to disconnect from Xbox Live.

My Xbox won't connect to my Wi-Fi

Hello,

What Xbox 360 console do you have specifically? Only the Xbox 360 S (Slim) consoles have integrated wireless adapters. If you are getting the "connect an Xbox 360 Wireless Adapter to your console" error, then you most likely have the Original model of the
console.

Also, who is your ISP, and are you using a router? If you are using a router, make sure the router is compatible with the Wi-Fi that Xbox 360 S' have.

(Taken from the consoles page) The Xbox 360 Slim model has:

Built in Wi-Fi: The new Xbox 360 is the only console with 802.11n Wi-Fi built in for a faster and easier connection to Xbox LIVE. Download or stream HD movies, TV episodes, and games from Xbox LIVE Marketplace in 1080p and 5.1 surround sound from anywhere
in the house (compatible with b/g/n networks).

If your router is not compatible/does not send or receive 802.11n, then you won't be able to use that router for Xbox LIVE.

I'm Samy an independent advisor. Welcome to the Xbox community. How are you?

Restart your internet devices for a few minutes, reset the console's network settings and try again.
Press the Guide button  on your controller, select Settings, and select System Settings.
Select Network Settings.
Select Wired Network.
Select Configure Network.
On the Additional Settings tab, select Restore to Factory Defaults. When prompted, select Yes, Restore to Factory Defaults. This resets the console's network settings only.
Restart your console.

This does not delete the games, your profiles, and other settings. It's just to reset the wireless connection's network settings too.

Try connecting your console to another network, share your phone's connection as a hotspot, and see if the same will happen.