Follow these steps in order to resolve the error quickly.
Contact your Mastercam reseller or CNC Software support if: mastercam 2021 license not found
Do not uninstall—perform a repair.
Firewall: Verify that your firewall is not blocking Port 22350, which is required for Mastercam licensing. try the following steps:
To resolve the "Mastercam 2021 License Not Found" error, try the following steps: mastercam 2021 license not found