| Symptom | Likely Fix | | :--- | :--- | | No LED light on SIM | Dead dongle or USB port (Test on another PC) | | Error only after Windows update | Reinstall Sentinel drivers (Step 4) | | Error on Windows 10/11 | Disable Driver Signature Enforcement (Step 5) | | Error on a laptop | Disable USB Selective Suspend (Step 3) | | Error after antivirus scan | Restore quarantined HASP files |

to ensure it has the permissions to access the USB hardware. eMastercam.com Important Note

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Locate the nethasp.ini file inside your Mastercam X5 installation directory (usually C:\mcamx5\ ). Open the file using Notepad.

He hit Simulate and waited for the familiar choreography: spindle speed ramp, toolpaths unfurling in colored streaks, collision checks ticked off in reassuring green. Instead, a small dialog box blinked in the corner: NO SIM FOUND.

The USB port or the physical SIM dongle itself is damaged or disconnected.

If your Mastercam X5 environment uses a floating network license rather than a local SIM, communication blocks can trigger the error. No SIM found - Woodworking Forum - eMastercam.com

The HASP driver relies on a background Windows service to communicate with Mastercam. If this service is stopped, the SIM will not be detected. Press Windows Key + R to open the Run dialog box. Type services.msc and press Enter.

Is this a , or did the software suddenly stop working ?

The physical security dongle is not making proper contact.

: Add an exception for Mastercam and its license manager in your antivirus settings. Licensing Alternatives

: Download the latest Sentinel HASP drivers from the Mastercam Support or In-House Solutions websites to refresh the connection.