Problems you may face using Sentinel USB dongles. The operation principle of a Sentinel dongle is in many ways similar to most standard security keys that you may be familiar with: once a user installs the software, it can be used only after the Sentinel original hardware key is connected to the computer.
All Noldus IT software that was released before 31 October 2013 came with a hardware key driver that is not compatible with Windows 8.1. If you want to run this software on a computer with Windows 8.1, you should download the latest driver (the attachment at the bottom of this page). To check the release date of your Noldus IT software program, look up the date of the file setup.exe on the installation disc.