: Navigate to %APPDATA%\MITSUBISHI\GT Designer 3\Library . Rename the folder to Library_BAK and relaunch the software.
Standard path: HKEY_LOCAL_MACHINE\SOFTWARE\MITSUBISHI 64-bit path: HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\MITSUBISHI Use code with caution. Press Win + R , type , and hit Enter. Navigate to the WOW6432Node path listed above. Look for the MELSOFT or GT Designer folder. gt designer license not found