Disconnected from Xbox Live every time I load Gears of War 3

[Sabin]

For the past two days whenever I load up Gears 3 I get disconnected from Xbox Live. When I try to connect an error comes after a few seconds saying I have been disconnected from XBL please sign in again. I do not have this problem with other games, I am able to play online in other games with no problem. I am also able to use xbox live while on the dashboard. I'm not sure what the problem is and was hoping someone could help.

Also earlier when I last managed to play a Gears match online, when I loaded the game I unlocked the 'welcome to the big leagues' achievement again, Im not sure how or why that happened. Also in the match I was greeted with weapon hints, weird. My rank hasn't been reset either.

Thanks for all the help guys

[OnCore69]

Did the same thing for me, i had to restart my modem and router and never had a problem afterwards

[Xenokai]

This is related to a title update problem, clear your system cache, then shut downt he xbox and reboot and try then, you should be able to update and play.