Troubleshoot Failed Xbox Live

Below is an information from Xbox.com on how to "Troubleshoot Your Xbox Live Connection"

Many Xbox Live gamers use a home network to connect their Xbox 360™ consoles to high-speed Internet connections. Most home networks employ either a stand-alone router, a home gateway (a combined cable/DSL modem and router), or a PC to access and/or share a single high-speed Internet connection. To work, network devices must be properly configured.

If you're using designated Xbox Live Compatible networking equipment with an Xbox Live Compatible ISP (Internet service provider), you should have no trouble configuring your equipment and accessing Xbox Live.

If you do experience difficulties—with or without Xbox Live Compatible equipment—use the Xbox Dashboard on your Xbox 360 console to help solve Xbox Live connection problems.

To troubleshoot your Xbox Live connection from the Xbox Dashboard:

1. Go to the System area of the Xbox Dashboard.
2. Select Network Settings.
3. Select Test Xbox Live Connection.

The system will perform a series of diagnostic tests, the results of which can help you configure your network to access Xbox Live.

# After the system has completed its tests, select More Info to learn more about your network, paying close attention to any test that failed.

In each case, the More Info section will offer tips for correcting the conditions preventing you from accessing Xbox Live.

Xbox Dashboard: Test Xbox Live Connection

Select Edit Settings to adjust your:

* IP Settings (including IP address, subnet mask, and gateway)
* DNS Settings (including primary and secondary DNS servers)
* PPPoE Settings (including user name, password, and service name)
* Advanced Settings (including host name and alternate MAC address)
Source: Xbox.com