Ensure the server computer holding the USB key is turned on and logged in. The "Sentinel LDK License Manager" service must be running on that server.
Unplug your physical Mastercam USB key (if using a hardware dongle). Go to the Windows > Programs and Features . Locate CodeMeter and uninstall it.
This technical guide provides a systematic, step-by-step approach to diagnosing and resolving the problem so you can get your CAD/CAM operations back online. 1. Verify the Physical Connection (HASP Users)
As a last resort, the license pointers in the Windows Registry may be corrupted.
How to Activate Mastercam Offline - No Direct Internet Access mastercam 2021 license not found
Mastercam features an internal utility tool that dictates whether the software should look for a local hardware key, a local software license, or a network license.
: Use the Mastercam System Inspector Utility to analyze exactly why the license isn't being detected [5.3].
Mastercam 2021 stores the server address in a simple text file: or the nethasp.ini file.
Gather your or Company ID and reach out to your local Mastercam Reseller. They can provide an updated .hvc or .wibu license update file to flash your key and instantly restore access to your software. Ensure the server computer holding the USB key
Did this error start occurring after a or a network change ?
Click . Give the system roughly 60 seconds to scan the network, then click on Sentinel Keys in the left menu to verify if the network license is now visible. 5. Adjust the Mastercam Advanced Configuration (NHeXes)
When Mastercam 2021 fails to find a license, it typically stems from a communication break between the software and your licensing method (Software, HASP, or NetHASP). 1. Verify and Set License Type
Before clicking "uninstall," it is crucial to understand why Mastercam 2021 suddenly cannot locate its license. Unlike modern subscription software that constantly pings a cloud server, Mastercam 2021 traditionally relies on localized verification methods. Go to the Windows > Programs and Features
If none of these worked, proceed to the systematic troubleshooting below.
Ensure your Windows Firewall allows traffic through TCP and UDP Port 1947 (the dedicated port for Sentinel HASP/LDK).
If you are receiving the error, it typically means the software cannot communicate with your security key (USB dongle) or the software-based license activator . Here are the most common solutions to fix this: 1. Check Your Licensing Utilities Go to your Start Menu and find the Mastercam 2021 folder. Run the Mastercam Licensing Utilities . Select Activation Wizard to ensure your license is active.
If you are currently facing this issue, try these steps in order:
Sometimes the dongle is recognized but not active.