Didya ever install a font in Windows, only to have it not appear in applications?

The other week, I realized that my Verdana font was there but not showing up...turns out when I copied it back over from a separate drive back to my windows folder, it got encrypted.  To get it to show up again, I had to decrypt the file.  At that point, I realized there were lots of other fonts that weren't decrypted, so I went through them all.

If you go to C:\Windows\Fonts and right-click on the font that isn't showing up and select Properties\Advanced\ deselect "Encrypt contents to secure data", the font should show up.