When I click retry a couple of times the message. A possible reason for this is that. . The hardware of your system could not be identified. So I just bought TDU2 for Steam and when I want to start it the message below appears. Backup your data first or install Windows on a spare drive (or buy a new one and keep your current drive. Clean install Windows 10, not upgrade. An error occurred while verifying your product license. Idk then maybe u have older version or smth cuz when I had some problem's downloading different one was enaugh, but if it's newest one. tdu2 unlock code.