Confirmed on two of our machines here, doesn't work with any external volume. It's related to Catalina permissions, the Photoshop and Illustrator team got the Catalina privacy memo from apple, but InDesign team did not. Check your permissions in System Preferences. I do not have InDesign asking for access to any External Volumes or anything else, but I think my designer does (though it doesn't work on this machine either).
Confirmed on two of our machines here, doesn't work with any external volume. It's related to Catalina permissions, the Photoshop and Illustrator team got the Catalina privacy memo from apple, but InDesign team did not. Check your permissions in System Preferences. I do not have InDesign asking for access to any External Volumes or anything else, but I think my designer does (though it doesn't work on this machine either).