Gt Designer License Not Found ((install)) Jun 2026

Enter the (3 digits followed by 9 digits) exactly as it appears on your License Certificate . 3. Clear Application Cache

Verify that the computer recognizes the USB device in . 2. Run as Administrator

Securely document your MELSOFT product IDs outside of your computer so they are readily available during unexpected reinstalls.

If you use multiple MELSOFT products, install older software generations (like GX Developer) before newer software suites (like GX Works3 and GT Designer3). gt designer license not found

What is the of GT Designer3 you are trying to open?

For USB dongle detection, run DongleTest.exe from the same folder.

Search for an executable named RegisterID.exe , Setup.exe within the utility folders, or search in your Windows Start Menu. Launch the tool as an administrator. Enter the (3 digits followed by 9 digits)

Security software can quarantine licensing executables, mistaken for malware due to their background operations.

Some antivirus or endpoint protection software blocks the license verification service (often named hasplms.exe or Sentinel LDK License Manager ).

Mitsubishi software relies on background services to verify authenticity. Press Win + R , type services.msc , and hit Enter. Look for any service starting with . What is the of GT Designer3 you are trying to open

If you have multiple MELSOFT products (like GX Works), ensure they aren't using a conflicting license manager version. Installing the latest often updates the license manager for all tools. When to Contact Support

This comprehensive guide will help you diagnose the root cause and get your software running smoothly. Understanding the Root Causes

Right-click the service again, select , and change the Startup type to Automatic . 3. Re-Register the Product ID

Start with the MELSOFT Activation Utility restart, move to folder exclusions, and only attempt a full reinstall as a last resort. By systematically working through this guide, you will restore your GT Designer3 functionality and get back to designing your HMI screens.

Mitsubishi licenses have a "recovery" feature. If you’ve lost your license due to a hard drive crash, you can request a License Recovery Certificate from your regional Mitsubishi office. They will issue a new key if you prove the old PC is decommissioned.