Ok, Xbox Live will auto sign me in when i fire up my 360 at the dashboard. When I start an older game I have not played yet, it prompts to download updates (i.e. Black Ops 2). Within 3-5 seconds Xbox Live logs me out and sends me back to the off-line dashboard. I can then re-log and start the game to the point of the update for the game. This is an endless cycle. I have tried to clear cache, tested connection with the connection working normally. I deleted my profile per Xbox support and then was instructed to delete the latest update for Xbox. Now I'm stuck in the ENDLESS loop where I can not connect to Xbox Live to download the Xbox update so i can redownload my Xbox Live Profile. Internet connection is working perfectly. Also tried setting up port forwarding and did not work either.
Anyone else have this concern????