I'm perplexed, I right click on the tff fill yet I cannot seem to find how to install the fonts without opening the file. I'm not completely tech savy, but not completely ignorant either. I just cannot figure this out.

Are you sure you click a ttf?

yes sir / ma'am !! all I get is.....open, cut, copy, delete & properties

Looks like your computer does not recognize the file as a font. Do you see the ttf extension? Did you try 'open'? Did you download on a WiFi connection? WiFi is often critical for fonts, one bit wrong and the checksum doesn't match anymore and the font is refused.
Can you tell as exactly as possible how you downloaded what from where and all you did after the download?

ar you on a public computer, like school, library, work,... ?

Do you right-clic in the Zip software or have you unzip the file then right-click in Windows Explorer ?

I am afraid that kr2c doesn't know Menhir, default settings for known file types.

Ahhhhh Menhir I'll try that from now on. Yes I have my setting so that I don't see file types. Maybe I shou;d change that I guess

Yes, you should. It always helps when you have a clue of what you are doing.

Wow, excuse me, that was totally snarky. By the way I know which ones are tff's without the extensions.

If that were true then how come you were perplexed? You downloaded a font which you saved somewhere. Then you saw a file with that font name. Ergo, it had to be a ttf.

I had the same problem and fixed it by uninstalling a program that was interfering. Infranview

That can happen if you let Irfanview take over the .ttf file association. Changing it back to the default Windows font viewer (fontview.exe) would probably
have corrected the problem. Of course uninstalling works too.

I've used Irfanview for years with no problems.

I was a bit confused by this thread so for future visitors with the same problem here is how I fixed it:

right-click a .tff file -> open with -> choose another app

then check the 'Always use this app to open .tff files' box

then select the Windows Font Viewer app and press OK.