Xbox keeps signing out

First thing everyone who's having these kind of issues is Sign in on account.live.com ,go to security and password, and update/verify your security info. Then re-download your profile on the xbox.

@UniformTrain3 - I would say this sounds like a corrupted profile.

If you haven't already, delete your profile (Delete Profile Only) and download your profile from Live.

Follow the steps up front and let us know where this takes you.

Delete Xbox LIVE profile safely

Before you delete your profile you have to know the username and password for your Microsoft account that is associated with your profile.

1. Go to Settings, and then select System.
2. Select Storage.
3. Select All Devices.
4. Select Gamer Profiles.
5. Select the gamertag that you want to delete.
6. Select Delete.
7. Select Delete Profile Only. This deletes the profile but leaves saved games and achievements.
   

Clear Xbox system cache (3 times in a row)

1. Press the Guide button on your controller, go to Settings, and select System Settings.
   
2. Select Storage or Memory.
3. Highlight any storage device, and then press Y on your controller.
4. Select Clear System Cache.
5. Repeat this process, 3 times in row.

Restart your console.

Download Xbox LIVE profile.

1. Press the Xbox Guide button on your controller (large X button in the center of your controller).
   
2. Select Download Profile.
3. Enter the Microsoft account associated with your Xbox LIVE gamertag.
4. Enter your Microsoft account password.

Again All i did was delete my account on my xbox then redownloaded the account

It should be working.

If you don't understand this simple suggesting. Look up a youtube

The exact same thing is happening to ever since the Black ops 2 update if you know how to fix this problem please let me know, Tank you .

im having a similar problem. but instead of mine logging out of LIVE it just signs out. i sign back in and everything is fine. its not live its just that my scc keeps siginging out