It occurs when the Vanguard anti-cheat system is trying to authenticate the hardware that you are using to run the game. Also read: League of Legends 14.10 massive Rune changes: Predator and ...

Hackers are selling League of Legends ... before finding Vanguard's source code. It's important to note that while this source code could be damaging to Riot in the near future, it likely won't have a ...