Before reinstalling anything, check if the licensing service is simply "asleep." Press Win + R , type , and hit Enter. Locate Sentinel LDK License Manager . Right-click it and select Restart . Ensure the "Startup Type" is set to Automatic . 2. Reinstall the HASP/Sentinel Drivers
. This error typically occurs due to conflicts with the Sentinel LDK security runtime, often triggered by Windows updates Common Fix: Using "RemoveDK" Registry Script wilcom e4 2 internal error 0x7101 occurred extra quality