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.
Launch Autodata. The E0209 error should be gone. E0209 Sentinel Key Not Found Autodata 3.45 Windows 7
Add the Autodata installation folder to your Antivirus list so it doesn't delete the files again upon reboot. 6. Registry Fix (Advanced) Plug the Autodata USB key into a different
The software cannot "see" the key if the background service is inactive. Press Win + R , type services.msc , and hit Enter. Locate . Right-click it and select Properties . Set Startup type to Automatic and click Start . 3. Disable User Account Control (UAC) Launch Autodata