My screen is only black or white or I receive the message "Failed to create OpenGl context". What can I do?
Your hardware or driver does not support any of the automatically set graphics engines of the client. Select another graphics engine by manually editing the file clientoptions.json.
The easiest way to locate this file is to type %LOCALAPPDATA%\Tibia\packages\Tibia\conf into the address bar of the Windows Explorer and to press "Enter". Open this file with a text editor, search for "renderer: 0" and replace 0 with 4 to directly start the Tibia client with DirectX.
Alternatively, you can replace 0 with 3 to start the client with the software renderer. However, there are no light effects in the software renderer mode.