When L.A. Noire first starts up, it displays an error message that says “Launcher cannot query DirectX. Please update Directx by reinstalling the latest redistributable”.

This is the only fix.

Fix 1: Install DirectX 9

• First, go to the installation folder of L.A. Noire (Steam -> SteamApps -> common -> L.A. Noire)
• There must be a folder named “3rd“, open it and search for “DXSETUP.exe”.
• Run DXSETUP.exe if you haven’t already.
• Wait for DirectX to be installed.

L.A. Noire can now be played 🙂