The "E0209 Sentinel Key Not Found" error typically occurs when the Autodata 3.45 software cannot communicate with its security emulator or the physical USB dongle
A: Partially. Windows 10 disables many legacy drivers. Use Windows 7 or XP Mode for Autodata 3.45. E0209 Sentinel Key Not Found Autodata 3.45 Windows 7
Plug the Autodata USB key into a different Windows 7 machine (or even Windows 10). If the same error appears, the dongle itself might be dead. Unfortunately, Autodata no longer supports version 3.45, so you would need to replace the hardware key or upgrade the software. The "E0209 Sentinel Key Not Found" error typically