With Steam running, re-test the original issue. Note: This process will not affect your currently installed games. If the issue persists, make sure.
Occassionally it will download like then stop again. I know that it pauses downloads when you start a game, but you can resume it while the game is.
I can 't Download America's army 3 or any game it wont work this is what + it will stop and not respond and i have to open steam up again and Can 't download any games or update games in steam.