In the world of industrial automation, software reliability is just as critical as the hardware it controls. For users of Mitsubishi Electric’s GOT2000 series software suite—specifically GT Designer3
Troubleshooting "GT Designer License Not Found" Error: Full Guide
If you run GT Designer inside a virtual machine (like VMware or VirtualBox) for industrial automation tasks, licensing conflicts frequently occur. gt designer license not found
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\MITSUBISHI Look for a folder named MELSOFT or GT Designer3 .
Open the Windows and navigate to Programs and Features . In the world of industrial automation, software reliability
is required. This involves uninstalling the software, manually clearing the "MELSOFT" folders in the Program Files and AppData directories, and then reinstalling using the original Product ID. It is also crucial to ensure that the version of GT Designer being used supports the specific HMI model being programmed, as older versions of the software may not recognize licenses intended for newer hardware iterations. The Impact on Productivity
This is the most common technical cause for this error. Mitsubishi's licensing system often conflicts with other software that uses Sentinel/Hasp drivers (e.g., Altium Designer, some CAD software, or older video games). Open the Windows and navigate to Programs and Features
If your license was working but suddenly stops, a recent change to your computer's hardware configuration could be the underlying cause.
If a reinstallation fails, remnants of old licenses may still be cached in the Windows Registry. Press Windows Key + R , type regedit , and hit .
Antivirus software (especially McAfee, Norton, or Windows Defender) frequently quarantines Mitsubishi license files because they act as kernel-level drivers. A Windows update or disk cleanup can also inadvertently delete the license file stored in C:\ProgramData\MELSOFT .