Navigate to your local disk drive, typically: C:\Program Files (x86)\MELSOFT\ or C:\Program Files\MELSOFT\ .
When this error hits, it's usually less about a missing license and more about a configuration or installation mismatch. It often happens during a fresh setup, after a Windows update, or when switching between software versions like GT Works3 and GT Designer3. While the software is industry-standard for HMI design, its licensing mechanism can be picky about administrator rights and installation paths. Verify the Product ID :
Before diving into complex fixes, try the simplest one. Right-click the shortcut on your desktop and select "Run as Administrator." If this works, you can permanently set this by right-clicking > Properties > Compatibility > "Run this program as an administrator." 2. Re-Enter the Product ID gt designer license not found
: The software was installed without a valid product ID or with an trial ID that has expired. Administrative Privilege Restrictions
Reboot your PC and relaunch the software to allow it to regenerate fresh files. : Ensure that the GT Designer3 Navigate to your local disk drive, typically: C:\Program
The software was installed from a partial update tool rather than the full installation media. vMix Forums Step-by-Step Troubleshooting 1. Clear Corrupted Configuration Files
If you have a physical copy, verify the "Software Registration Card" to confirm the user ID matches the installed version. Adjust Windows Display Settings Set the Windows font size to Default (100%) While the software is industry-standard for HMI design,
This error often pops up when the software cannot verify your Product ID or when an add-on function (like enhanced drive control) requires a separate license.