A scan can take longer than expected or omit files when its location is large, slow, unavailable, protected, changing, or filtered by settings.
Confirm whether the scan is still working
Large folders with many small files can progress slowly even when their total size is modest. External disks, network volumes, and content comparison also add time.
Keep the Mac awake and connected to power. Do not start another scan of the same location. If diCleaner and disk activity remain completely unchanged for an extended period, cancel once and retry with a smaller folder.
Check the location
Verify that the selected folder is correct, the disk is mounted in Finder, and a network or external volume has not disconnected. A read-only volume may be scannable but not removable.
Check permissions
Review Settings → Privacy and grant the folder needed by the tool. Enable Full Disk Access only if protected locations are relevant. Quit and reopen diCleaner after changing Full Disk Access, then start a new scan.
Check scan settings
Minimum-size thresholds can intentionally omit smaller files. Ignore rules can exclude files or entire folder trees. Review both before assuming detection failed.
Cloud files
Online-only placeholders may not expose complete local content or size information. Download required files through their cloud application and rescan.
Reduce the scope
Scan one subfolder instead of an entire disk. If that works, repeat with other branches to identify the location causing the delay.
Collect useful details
If the problem persists, note:
- diCleaner edition and version.
- macOS version and Mac model.
- Tool name.
- Selected location and disk format.
- Approximate file count or size.
- Permission status.
- The stage or message where progress stopped.
Do not send private file contents when a path and technical description are sufficient.