Fonts I was using just fine have become "unavailable on my computer"

I was having this problem, but simply opening Creative Cloud desktop app and letting it talk to the computer while using InDesign was the answer. Here's how I'm reasoning it out.

First, since fonts are no longer "installed" but instead are "activated" it seems like the font information is stored in the cloud, not your computer.

Second, the individual CC program (for me, InDesign) is not communicating with the cloud in such a way as to access your fonts. It is not meant to. So, just because you have InDesign open, are connected to the internet, have all your preferences set up properly, and are fully updated, does not meant you have access to your activated fonts!

Third, there is ONE APP that does give your other CC apps access to your activated fonts. And that is the Creative Cloud desktop app. So open it up, let it run, and **POOF** your other CC apps now have access to your activated fonts.

Don't want to deal with this? Purchase your important, favorite, or frequently used fonts separately and actually install them on your computer the old-fashioned way. Just know you can't do it through Adobe CC because that is not how the system is designed. It's meant to be an efficient cloud-based thingy.

What they should really change is the error message. It is SO unhelpful. It should say, "These fonts are not available because you need to access them through the cloud so OPEN YOUR CREATIVE CLOUD APP!" Certainly the instruction to "enable" the fonts meant nothing to me. And the buttons offered do not appear actually to have any effect when clicked, other than channeling all one's documents into an extremely small pool of boring fonts that always seem to be available (are installed on one's computer?)

Good luck!