What Do You Do When League Of Legends won’t Open?.Uninstall And Reinstall League Of Legends.Download The Graphics Driver Updates And Install Them.End All Other Running Background Processes In The Task Manager.Whitelist The League Of Legends Client In The Firewall.Run League Of Legends With Administrator Privileges.Launch The Game Directly With The League Client Exe File.What To Do When League Of Legends Won’t Launch On Your Computer?.Solutions For The League Of Legends Won’t Open Issue On Your Computer.Factors That Prevent League Of Legends From Launching On Your PC.