If you have set other launch options, make sure you separate them with a single space. In the dialog box, type – dx19 in the bar and click on OK to save the change. Step 5. Then a new window will pop up and give an advanced user warning. Step 4. In the Properties window, go to the General tab and click on the Set Launch Options button. Step 3. Right-click the affected game and select Properties from the context menu. Step 2. Navigate to the Library tab from the top toolbar. Step 1. Launch the Steam client on your computer. If you installed the game via Steam, you can try switching to DirectX9. Many users reported that the FFXIV black launcher issue is fixed by using DirectX9. It’s known that the game is not fully compatible with DirectX10 or 11.