Can't add Windows Fonts folder as a sync

I’m having an issue being able to select certain folders for backup on the windows client, specifically the Fonts folder. Wondering if there’s a solution I’m not aware of or at least a work around.

Here’s screenshot showing that the fonts folder doesn’t show up in the ‘add folder sync connection’ file explorer.

Maybe because it’s a hidden folder? or due to restriction in user access rights?
B.