fonts on my computer are not available in my illustrator file.

What kind of font is it? A PostScript Type 1 font?

In that case: they don't work in the current version and won't work ever again.

Install an earlier version of Illustrator if you want to continue using Type 1 fonts.

If it's not a PotScript font, do you use a font managing application?

What kind of font is it?

Can you download it again and reinstall it?

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post if it helps you get responses.

<moved from using the community>