software was installed using a valid Product ID and License Key provided in the legal license agreement.
| Check | Action | |-------|--------| | | For GT Designer3 (non-SoftGOT), a license is usually a USB dongle or software license certificate. | | Is the USB dongle inserted? | Check Device Manager → Universal Serial Bus devices → “MELSEC License Key” or similar. | | Is it SoftGOT? | SoftGOT requires a dedicated license (separate from GT Designer3). | | Did you install the License Manager? | Mitsubishi’s “License Manager” tool must be installed. | | Is License Manager service running? | Open Services → “MELSOFT License Manager” → Status should be “Running”. | gt designer license not found
. Without it, the software will only operate in "Demo Mode" for approximately 3 hours. Antivirus Conflicts software was installed using a valid Product ID
If the above fails, the license registry is corrupted. | Check Device Manager → Universal Serial Bus