This was incredibly annoying, but I found the results deep on a github issue: atom/atom#17672 (comment)
Instructions:
- Open
Security & Privacy
- In the bottom-left corner,
Unlock to make changes
- In the left panel, scroll down to
Full Disk Access
- In the right panel, scroll down to find
Atom
and check the box. - Close down the security settings panel
- Force-Quit Atom, by holding
control
+option
before clicking the atom icon
What if I don't have Atom in the list on the right?