DigitalVolcano Software Support

It means that those folders are also part of a larger duplicate folder group (under a different group number). If you right click on the folder you can jump to that containing group

You can't do this currently. There is a pause function which will stop disk scanning activity, but you can't save the state.

Just use:
Regular Mode - > Ignore content
With
'Same file name' only.

It's possible there was an issue moving the files - in that case they would be left in the list - was there anything in the log file?

Are you getting these problems from the scan results, or marking using the selection assistant?

If the scan, which mode / matching settings are you using? Please post a log snippet if possible.

If the Selection Assistant, please post the settings you used.

Updates in Duplicate Cleaner v5.25 - 31 Mar 2025

Ukranian language
Fix: Displaying high DPI images at small sizes in Image Preview
Fix: Not saving millisecond part of time tolerance setting (Video mode)
Update: Similar file/date size checking moved to end of duplicate scan process

https://www ...

Update: Actually try setting Folder 1 to External Only+Master - this will stop it finding duplicates that are within folder 1 only, giving you less files to sort through.

1 - If you select everything in a group it won't allow you to create the hard links.

2 - You can't do this automatically currenty. You could add the 'Count hardlinks' column, and check manually.

Set Folder 1 to "Protected" and "Find Duplicates->Master"
The Protected will stop you making files in Folder 1. The Master setting means that only files which duplicate this folder will be matched in other folders.

You can set Folder 2 to 'Find Duplicates->External only" though it shouldn't make a ...

The Scan folder holds your current scan. If you don't need it you can delete the files in this folder. Sometimes old scans can be left behind if there was an issue removing them, or the program was shut down during scanning.