Because MELSOFT applications traditionally run on 32-bit architecture, 64-bit Windows operating systems redirect registry readings to a specific path called Wow6432Node . If the installer fails to write to both locations, GT Designer cannot find your license.
The roots of this error generally fall into three categories: installation errors registry corruption version mismatches Invalid Product ID:
Press Win + R , type regedit , and hit to open the Registry Editor. Navigate to the following paths depending on your system: 32-bit Windows: HKEY_LOCAL_MACHINE\SOFTWARE\MITSUBISHI gt designer license not found
If none of the above works, you may have a hardware failure (dead USB dongle) or a corrupted license file. Contact technical support with:
64-bit Windows systems often look in the wrong folder for the 32-bit software license. Navigate to the following paths depending on your
GT Designer requires a valid software license activation to run. When the application launches, it queries the Mitsubishi License Management service to verify authorization. If this handshake fails, the software locks you out.
: If you update to GT Designer3 version 1.265B or later , older uninstallers or installers may fail to recognize the existing installation, leading to potential registry or licensing mismatches. When the application launches, it queries the Mitsubishi
Rarely, the license check fails if you are using Remote Desktop (RDP) or have switched display adapters. Try launching GT Designer directly on the local machine (not over RDP).
Keep a secure digital record of your product IDs, installation discs, and site certificates.