A faulty or outdated driver—sometimes caused by a Windows Update—can make the physical key "invisible" to the software. no sim found? - Industrial Forum - eMastercam.com

: Go to your Windows Start menu and navigate to Mastercam X8 > Utilities > NHaspX.exe . Match Your Key :

Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\CNC Software, Inc.\Mastercam X8 . Find the entry for .

If using a standard physical USB key, set the type to and the mode to Local .

If the utility fails to save your settings, you can manually point Mastercam to the correct "SIM" type via the Windows Registry. Press Win + R , type , and hit Enter.