Possible solution to game launch crash

Like other people since the last update, after champion select the game was instantly crashing and I couldn't connect to the game.

What worked for me was to go to the league of legends config folder (C:\Riot Games\League of Legends\Config) and rename the "game.cfg" file to "gameold.cfg" and retry to connect to a game. The game.cfg file contains your videos and other preferences. By renaming it, you force the game to regenerate one and use default video settings.

After comparing the new one with the old one, it looked like some of my preferences were changed which caused the game to not being able to start.

Hope that it will help other people who have this issue.