Is this a license or a floating network license?
This comprehensive guide covers why this error occurs, how to fix it immediately, and how to prevent it from happening again. Understanding the "GT Designer License Not Found" Error
Mitsubishi provides a dedicated, secondary utility within its installation directory to re-enter or repair product IDs without completely reinstalling the software package.
Add the entire installation path folder as an exception. The default path is usually: C:\Program Files (x86)\MELSOFT\ Restart your computer and test launching GT Designer. Proactive Tips to Prevent Future License Errors gt designer license not found
It was a typical Monday morning for John, a seasoned game developer at a renowned studio. He fired up his computer, sipped his coffee, and prepared to dive into the world of Gran Turismo (GT) game development. But as he launched the GT Designer software, a chilling error message greeted him:
: A frequent cause is trying to open or create a project for a GS-series GOT (like the GS21) without having that specific support package installed.
Many automation professionals run software like MELSOFT inside a dedicated VM (e.g., VMware or VirtualBox). This isolates the software environment from host Windows updates that might break software licensing. Is this a license or a floating network license
Open the and navigate to Programs and Features . Locate MELSOFT GT Works3 (or GT Designer3) in the list. Right-click it and select Uninstall/Change .
GT Designer3 has a 30‑day trial. After expiry → exactly this error. Solution: Purchase and install permanent license.
If registry entries are corrupted, a standard uninstallation might leave broken license fragments behind. A clean reinstall forces Windows to rewrite the license pathways. Add the entire installation path folder as an exception
This comprehensive guide covers why this error happens and provides step-by-step solutions to fix it. Understanding the Error
| Check | Action | |-------|--------| | | For GT Designer3 (non-SoftGOT), a license is usually a USB dongle or software license certificate. | | Is the USB dongle inserted? | Check Device Manager → Universal Serial Bus devices → “MELSEC License Key” or similar. | | Is it SoftGOT? | SoftGOT requires a dedicated license (separate from GT Designer3). | | Did you install the License Manager? | Mitsubishi’s “License Manager” tool must be installed. | | Is License Manager service running? | Open Services → “MELSOFT License Manager” → Status should be “Running”. |
For 64-bit systems: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MITSUBISHI