At the main menu, use the ` (tilde) key to open the console. Set gamepad to enabled if you are using a controller. Can finally play split screen offline now Left 4 Dead 2 | Universal Split Screen In Universal Split Screen, alt-tab into Left 4 Dead 2 so the window is selected, then click ‘Unlock Source engine for a new instance’ Go to Options -> Keyboard/mouse. But in the end made a whole new xbox live account for player 2 then launched the game and it worked.
I had the same problem, took some frustration from removing and redownloading the account.You will need to access the developer console and execute some commands to achieve split-screen … Have you ever wanted to play Left 4 Dead 2 split-screen with 2 players on 1 PC? you might think it's impossible but the split-screen mode is actually integrated into the game but it's just hidden.
