How do I install fonts from Type On Call into Win 8.1

I have been using Trade Gothic Condensed as my default Excel font for many years. Each time I get a new computer I have been able to install the font in the new OS. I am having trouble doing that with Win 8.1. It says it is installed but does not appear in my list of Fonts, yet the Myriad font comes up fine.

Does anyone have any suggestions how to install the Trade Gothic font in my new Win 8.1 computer?

Many thanks

George