How do I connect my Xbox 360 to modern wifi?

I have the same problem with two airport express routers. My 360 connects to the router with the weaker signal and drops the connection. I have a mac mini sitting next to the 360 and it knows how to handle wifi networks like a mature adult and connects to
the stronger signal. My cheap hack is simply sharing the wifi connection of the mini over it's ethernet port and plugging the 360 into the mini via ethernet.

Very annoying, I have to be running my mac mini in order to have xbox live because the 360's wifi doesn't know how to connect to the stronger signaled network. This needs to be fixed. Windows machines seem to figure it out, why not a 360?

How do I connect to WiFi if my Xbox is telling me I have an IP adress error but Bell is saying it's already connected to the WiFi?

Do I need to be able to connect to Xboxlive from my 360 to play them? ..Cause I have an Xbox Live account but I don't have a network adapter for my 360 to connect to my wifi so my 360 isn't connected to the internet yet.

Hi deadlush.

I have a Xbox One and a Xbox 360, and for several months both ran well over my WiFi network, a router Linksys WRT54GL configured for a non-routerable network (10.10.10.xx) and connected to Internet via a Technicolor TG582N.

I know the TG582N can run a WiFi too, but without the MAC address filtering I do want to use to improve security.

Today, suddently, the Xbox 360 started to be unable to connect to XBox Live, while the Xbox One is still working fine. I checked all configurations, reset the Xbox 360 and I did all the checks indicated in the support page, no way. At the end, I activated
the TG582N WiFi and connected the Xbox 360 to this WiFi network, and resolved the connection issue, but I do not like this...

Any suggestion?

Many thanks

What specifically would allow the Xbox 360 Wireless Networking Adapter to connect while the built-in wifi would not?

My Xbox 360 S detects a wireless signal with 4 bars, and I am testing it while sitting it right next to the modem, so there is no issue with signal strength.

My Xbox 360 S's built-in wifi is able to connect to a hotspot, and it is even able to connect to my neighbor's wifi from my house.