Is this happening on a or across multiple network computers ?
To ensure your machine shop avoids unexpected downtime in the future, implement these best practices:
If no keys are listed, your computer is physically not detecting the license, pointing back to a driver failure or broken USB dongle. Conclusion and Next Steps mastercam 2021 license not found
echo Flushing DNS for network licenses... ipconfig /flushdns
Click to synchronize your software with the online Mastercam licensing servers. Summary of Error Causes and Fixes Resolution Dead USB Port No light on HASP Switch to a direct motherboard USB port. Corrupt Driver Windows Device Manager Error Run the driver purge and reinstall commands. Blocked Port Ping works, Mastercam fails Open TCP/UDP Port 475 in Windows Firewall. Wrong Server IP Time-out error on startup Edit the nethasp.ini file with the correct IP. Is this happening on a or across multiple network computers
Mastercam 2021 was released before Windows 11. While it usually works, Windows 11's stricter driver signing requirements can block the Sentinel drivers.
4. Troubleshoot Network Licensing (NetHASP / Network CodeMeter) ipconfig /flushdns Click to synchronize your software with
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Navigate to the directory containing the installer using the cd command.
Mastercam relies on the Sentinel LDK License Manager service to verify licenses. If this background service stops running, Mastercam will fail to launch. How to check and restart the service: Press Windows Key + R to open the Run dialog box. Type services.msc and press . Scroll down the list to find Sentinel LDK License Manager . Check the Status column: If it is not running, right-click it and select Start .