Unable to activate fonts on macOS BigSur

[Chanysaurus Rex]

My Illustrator just updated last night and I updated to Big Sur tonight bc when I opened Illustrator to work on a flyer I made, it said I was missing fonts I had used for it, so when I went to activate them, they won't activate now. What do I do? I've already quit and restarted my computer several times and nothing has helped!

[italosan]

Hi, do you happen to use a font manager?

[Ashutosh_Mishra]

Hi there,

Sorry to hear about your experience. Would you mind sharing the version of Illustrator?

Does it happen with specific file/fonts?

I'd also recommend following steps given on this help article(https://helpx.adobe.com/in/fonts/kb/troubleshoot-fonts-illustrator-indesign.html) & let us know if they help.

Looking forward to your response.

Regards,

Ashutosh

[Chanysaurus Rex]

I think my program updated overnight bc now it says 2021 instead of 2020. However after a couple hours the fonts magically deactivated without my doing anything. Maybe it was a bug in the upgraded version and OS Big Sur?