The Windows version of the Timex Device Agent was developed to support only Windows 7 and Windows 8 operating systems. If you need to install it on a higher version (eg. Windows 10), then compatibility tweaks have to be used.
For example, download the agent again and then right click it. Choose Properties > Compatibility and enable OS compatibility. Choose a previous version (Windows 7 or Windows 8), tick the Run as Administrator and then launch the program.