I' ve tried everything, but when I diagnosis my connection everything except unable to connect to xbox live is working. Some sort of communicaiton error. Please help
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Although I don't XBL, check your internet connection and/or modem. Also see if it's plugged properly into your xbox.
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You need to connect your router to the xbox first to see if you can get to Xbox live. Than connect the adapter. If you need more help, go to xbox.com