Gt Designer License Not Found May 2026

Troubleshooting Guide: Resolving the "GT Designer License Not Found" Error

If you are a user of Mitsubishi Electric’s GT Designer3 (or GT Designer2) software, you may have encountered the frustrating error message: "License not found." This typically appears when launching the application or attempting to transfer a project to a GOT (Graphic Operation Terminal).

Step 1: Restart the MELSOFT Activation Utility Service

1. Press Win + R, type services.msc, and press Enter.
2. Scroll down to find MELSOFT Activation Utility or Mitsubishi Electric Activation Service.
3. Right-click it and select Restart. If it is stopped, click Start.
4. Set the Startup Type to Automatic.
5. Close Services and relaunch GT Designer3.

(License Key). If you are using a trial or update version, it may still require the primary Product ID from your original software package to be fully registered. Check for GT SoftGOT Dongle : If you are trying to run GT SoftGOT , this version specifically requires a physical USB License Key (HASP dongle) GT27-SGTKEY-U gt designer license not found

. In an industrial environment, downtime is expensive. Keeping a record of Product IDs, maintaining updated installation media, and ensuring that engineering laptops meet the software’s administrative requirements are essential practices for any automation professional. Press Win + R , type services

3. Keep a Standalone License Manager

If you have a network license (floating license), ensure the server hosting the "MELSOFT License Server" is never put to sleep. Use a static IP address for that server. (License Key)