You need to disable User Account Controls
@emtp275
-Click on the Start bubble to bring up the Start menu.
-Type in "UAC" into the search box.
-Click on "Change User Account Control settings".
-Click on the slider inside of the UAC window, and drag it down to "Never notify".
-Click OK, restart your computer.
-Re-download the HPP-21 software, run it as an Administrator.
Should work properly now. If you want, once you install the HPP-21 software, you can re-enable UAC.