What typeface is it? Is it just one font file or a family of multiple font files? Have you tried re-booting the computer? Was the font file installed straight into the Windows Fonts folder or through a 3rd party font manager?
I've had issues with a couple of type families in a couple different graphics applications on my desktop PC. A previous version of Illustrator wouldn't recognize all 36 weights of "Sica," a large type family from dooType, but other applications I use see all of the font files. Sica works properly with the latest version of AI. I ran into a similar problem with "Vito" a 60 font super family by Dots&Stripes Type. CorelDRAW 2020 won't see any of the 5 bold upright widths of Vito and shifts them all to Italic. But the previous versions of CorelDRAW saw all 60 weights correctly. In the case of CorelDRAW 2020 it's likely a bug in that program with how it reads font naming tables. But it's also possible Windows itself could be a source of trouble. The OS still acts as if type families only have regular, italic, bold and bold-italic weights. Apparently font developers have to deploy work-arounds to get super families to work correctly under Windows.
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