| License Type | How It Works | Common "License Not Found" Causes | | :--- | :--- | :--- | | | Tied to a single, specific computer (often via a hardware ID like the MAC address). | Changing a critical hardware component (e.g., network card) can invalidate the license. | | Floating (Network) License | A limited number of licenses are shared across many users on a network from a central license server . | The computer cannot connect to the license server, or all available licenses are in use. | | License Key (Dongle) | A physical USB device that acts as the license, allowing the software to run when it is plugged in. | The System Driver is not installed, the USB port is faulty, or the license key hardware is damaged. |
If you are working on a project from a newer machine, your license check may fail against older software. Visit the Mitsubishi Electric FA Downloads site .
GT Designer3 updates and add-ons are often distributed as separate packages. If you install an upgrade or an environment update on a clean machine without installing the standard base version first, the license check will fail. gt designer license not found
If the software opens without the error, you have a permissions issue.
I’ve tried running the program as Administrator and checked the firewall settings, but no luck. | License Type | How It Works |
If the error started immediately after a "Patch Tuesday" Windows Update:
If you use IQ Works, utilize the integrated IQ Works installer rather than installing standalone versions of GX Works, GT Designer, and MT Developer. This ensures unified registry pathways. | The computer cannot connect to the license
There can be an instance where the configuration file of the application which is giving you the error is corrupted. In this case, vMix Forums GT Works3 Installation Instructions DVD Version
Any guidance would be greatly appreciated!
Best for posting on forums like MRPLC, Reddit, or technical support communities.
If you activated using a license code: