Wait for the "Device is ready" notification before launching the software. 2. Update or Reinstall Dongle Drivers
Sometimes, a corrupted HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Hardlock key remains. Delete this key (backup first), restart, and let the dongle rebuild it.
Since this error is often related to hardware changes, have you recently ? This frequently "breaks" the link between the dongle and the software activation. How Do I install My Dongle Drivers
To resolve this issue, follow these technical recovery steps: Reinstall Sentinel Drivers Unplug the USB dongle.