If you use multiple MELSOFT products, install older software generations (like GX Developer) before newer software suites (like GX Works3 and GT Designer3).
The software cannot read the license registry key without admin rights.
: High-security settings may block the licensing service. Temporarily disable these to see if the software launches, then add an exclusion for the application. System Permissions : Try running the application as an Administrator
Verify that the computer recognizes the USB device in . 2. Run as Administrator gt designer license not found
| Message you see | Likely cause | | :--- | :--- | | License not found | No dongle / License Manager missing | | License invalid | Corrupted license or wrong version | | License expired | Time-limited license ended | | Cannot find Sentinel key | USB driver not installed |
Once you resolve the "License Not Found" error, follow these rules to ensure it never returns:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MITSUBISHI\MELSOFT\MELSOFT_COMMON\AUTHORIZATION If you use multiple MELSOFT products, install older
LM_LICENSE_FILE = C:\MELSEC\License\license.dat
You can try to re-enter your Product ID without uninstalling the whole suite. Open the GT Works3 installation disk or installer files. Run setup.exe .
Tell you on your PC.
For physical key users:
Go to C:\Users\ \AppData\Local and C:\Users\ \AppData\Roaming . Find the folder named or similar.
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