Have you still got this problem, if so try launching it as an Admin (Right click the ETS2MP.exe and Select "Run as Administrator" then try in game again) Don't forget you may have to wait a few seconds for the connection to be established before the TAB Menu and Mouse cursor are functional (Working). I have to wait until I have been driving for a few seconds before I can use my Tab Menu and Right Click to get the Mouse Cursor to appear. If this still doesnt fix it I pose you the question... Are you using any type of Controller (Wheel, Joystick, Gamepad)? - Hope this helps - Ryan