Some GeoStudio licenses requires a USB key (also known as a dongle) to be attached to the computer in order for the license to work. The computer's operating system requires a driver to be installed to properly recognize the USB key. When the computer successfully recognizes the USB key, a red light will illuminate on the key.
If the red light fails to illuminate, you should update your driver. You can download the latest version of the required driver from our website at: