Duplicate files · Duplicate messages and problems
What does "Cloud scanning needs the built-in cloud engine, which isn't available" mean?
Short answer: Cloud scanning uses a component built into the app, and Storage Studio couldn't use it — usually an incomplete or damaged installation. Reinstall the latest version from the install page over the old copy; This Mac and iCloud scans aren't affected.
Checking cloud accounts relies on a component that ships inside the Storage Studio app. This message means the app couldn't use it, which usually points to an incomplete or damaged installation rather than a problem with your account.
To fix it, quit Storage Studio, download the latest version from the install page, drag it into Applications to replace the old copy, and open it again. Scanning This Mac and iCloud Drive isn't affected. If the message persists, contact support from the app.