Your router is automatically equipped with firewalls meant to protect your PC from intruders. However, these firewalls often misread information needed to run online video games, and block necessary files from reaching your XBox. In this tutorial, learn how to change the NAT settings of your modem to "Open" and allow these files to get through. By doing so, you will be able to take full advantage of your XBox Live account.
Note: If you do this right, you will not affect the computers in your home. Firewalls will still be in place to protect your PC but will no longer interfere with your XBox.
Go to dashboard on your XBox
Test your Live connection
Sign back in
If for some reason this method does not work, try any of these:
Alternative method 1:
Reset your router
Alternative method 2:
Check settings. Check if uPnP is enabled.
Alternative method 3:
Try "Port forwarding" Get Portforwarding