The "Sentinel Key Not Found" error in Autodata (often accompanying Runtime error 217 or Error E0226) occurs when the software cannot verify its security dongle—either a physical USB key or a software-based emulator. On Windows 10, this is frequently caused by missing drivers, disabled services, or interference from Windows security features. Core Troubleshooting Steps

Check the SysDev Laboratories Sentinel Guide for specific Windows 10 installation steps. Advanced Solutions for Autodata 3.45

service is running. If it isn't, right-click and select "Start." Summary Troubleshooting Table

Once the system reboots, attempt to run the emulator or reinstall the drivers. Correct Registry & Regional Settings