Download the latest Command Line HASP Driver Installer from the official Mastercam or Thales website.

Right-click the entry → Uninstall device . Then unplug the dongle, wait 10 seconds, and plug it back in. Windows will automatically reinstall the driver.

Plug the USB key into another computer with CodeMeter installed to see if the computer detects the hardware. If it doesn't light up anywhere, the dongle itself may be dead and requires replacement through your Mastercam Reseller. 2. Restart and Update CodeMeter Runtime

Firewalls frequently block communication between the workstation and the license server.

Ensure the USB key is firmly plugged in and glowing (if applicable). Try a different USB port to rule out a hardware issue.

If it is already running, right-click it and select .

Are you using a standalone software license, or are you trying to connect to a network server?

Temporarily disable your Windows Defender Firewall or third-party antivirus software. Test launching Mastercam 2021.

For floating licenses managed by a central office server. Click Apply and OK . 4. Resolve CodeMeter and Software License Issues

How to Fix the "Mastercam 2021 License Not Found" Error: A Complete Troubleshooting Guide

Navigate to your Windows Start Menu and search for . In the left-hand panel, click on Licensing .

The CodeMeter or HASP driver is corrupt or needs an update.

Mastercam opens fine when you right-click and "Run as Administrator," but shows "License Not Found" when you double-click it normally.

If you use a physical USB HASP, unplug it and plug it into a different USB port to force the system to re-recognise the device.

Reboot your computer to refresh all background licensing tasks. 2. Update or Reinstall Sentinel HASP Drivers