Why does my wifi not show up in Windows settings?

Go to the settings of your Xbox 360. There under the network settings go to the additional network settings and reset it to factory defaults.

Then have the console search for WiFi networks in the area. Does the SSID of your new modem show up?

If so, then provide the correct Passkey for the WiFi and connect.

If the WiFi doesn't show up, check your WiFi router if you have 2.4GHz WiFi enabled. Also make sure that you don't use "exotic" characters in your SSID like Umlauts (ÄÖÜ) or accented characters (áèû) or stuff like that.

Also could you please describe in more detail at what stage your console fails to connect when you do a connection test to Xbox Live?

Does it see your WiFi SSID?

Does it connect to the WiFi but not the Internet?

Does it connect to the Internet but not Xbox Live?

Well, your console has to connect to the Hotspot. The Hotspot only provides WiFi, and does not connect to devices itself.

Set up your Hotspot to be visible. If you use a smartphone as Hotspot, be aware that you can NOT use Bluetooth as tethering method. The phone needs to use WiFi to share it's cellular connection.

Some modern phones are able to bridge a WiFi connection, but usually, if you set up a WiFi hotspot on your phone, the connection to WiFi gets disconnected, and the phone connects to the Internet via it's cellular network, and shares that connection via WiFi.

Go to your console's network settings and let it search for WiFi networks. Does your Hotspot SSID (Network Name) show up in the list?

If not, check your phone settings.

If the SSID shows up on the console, connect to it, and provide the Password that the phone provides (or that you set up in your phone for the Hotspot).

Depending on your cellular data plan, it might not be permitted to use Laptops, PCs or consoles via cellular hotspot. In that case contact your phone provider.

Also be aware, that multiplayer through such a hotspot is usually problematic.

My hotspot worked great before XBOX live went down. Now it shows my wifi but says it cant connect to the internet or that my network isnt set up but it is set up...

When I set up my wifi network with my new windows 8 computer, they all just synchronized. It was pretty convenient.

On my Windows7 Network and Sharing Center already set Home network, but zune still don`t connect to phone by wifi. Firewall disabled, home network set, wifi is working, zune shows up correct wifi ssid connected, but when i try to connect my phone Error
C00D07C9 appears.