The error in Autodata 3.45 on Windows 7 typically indicates that the software's security system cannot verify the presence of the required hardware dongle or its digital emulator . This prevents the application from launching, often accompanied by "Runtime Error 217". Common Causes

Launch Autodata. The E0209 error should be gone.

Several factors can contribute to the E0209 Sentinel Key Not Found error:

Run the tool as an Administrator. Select Enable Test Mode and click "Next."

Incorrect registry editing can break Windows. Backup first.