The software is being run without the necessary administrative privileges to access license files.
Always store your license key in a digital vault or physical sticker on the software box.
Open the (if installed as part of GT Works). gt designer license not found
the software, ensuring you enter the Product ID carefully when prompted. Do not skip this step to "enter it later." Tips for Avoiding License Issues
Whether you've just reinstalled the software or it suddenly stopped working, Common Causes of the License Error The software is being run without the necessary
If you use GT Designer on a VM (like VMware or VirtualBox), ensure the VM has consistent hardware ID settings, as some licenses tie themselves to the virtual hardware signature.
You may be trying to run a specific version of GT Designer (e.g., GT Designer2 vs. GT Designer3) that isn't covered by your current Product ID. Step-by-Step Solutions 1. Run as Administrator the software, ensuring you enter the Product ID
Mitsubishi often includes a management tool within the installation folder.
Navigate to the directory where GT Works3 is installed (usually C:\Program Files (x86)\MELSOFT ). Look for a utility named or similar.
Troubleshooting the "GT Designer License Not Found" Error If you’re working with Mitsubishi Electric’s HMI software, seeing the (or "License Key Not Found") message can bring your project to a screeching halt. This error typically occurs when the software cannot verify that a valid product ID has been registered on the system.