: Try a different USB port. Plugging into a new port may trigger Windows to reinstall the correct driver.

or its associated license. This is often caused by incorrect driver configurations, a physical hardware issue, or a software mismatch. eMastercam.com Common Fixes and Troubleshooting Steps Verify SIM Connection:

I am currently trying to get Mastercam X5 up and running on a workstation, but I am hitting a wall with a licensing error.

If Mastercam X5 reports “No SIM found” (or a similar licensing/dongle error), it usually means the software can’t detect the Sentinel HASP (also called Sentinel LDK) hardware key or its driver/service. Below is a concise, practical guide to diagnose and resolve the issue.