Duplicate files · Duplicate messages and problems
Does "No duplicate files found" mean there are none at all?
Short answer: It means none were found among the files compared, and the message says what was covered. Copies can be missed if they're under 1 MB, in an unchecked place like Music or the Photos library, online-only in iCloud, or not exact copies.
It means none were found among the files that were compared — and the message tells you what that covered. For a cloud account it says how many files of 1 MB or more were compared; if nothing was large enough, it says that instead.
If you're sure there are copies, check whether:
- the files are under 1 MB — turn on Include small files and scan again;
- they're in a folder that isn't checked, such as Music, an external drive, or inside the Photos library;
- they're online-only iCloud files, which are skipped;
- they're not exact copies (edited or re-saved versions don't match).