The "License Not Found" error in GT Designer typically occurs in two distinct software contexts: vMix GT Title Designer (broadcast graphics) and Mitsubishi MELSOFT GT Designer (industrial HMI design). 1. vMix GT Title Designer
| 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 | gt designer license not found