With OneDrive, DropBox or Google Drive you usually need to point Duplicate Cleaner towards the locally synchronized folder on your PC. You can find this by clicking on the drive's desktop icon. The OneDrive/Google/DropBox application should be running on the PC to enable any changes you make to be mirrored in the cloud.  In some cases (such as OneDrive) you can also scan the cloud directly as a network drive - see below.

  • Always remember to back up first before removing any files.
  • Make sure your files are in sync with the cloud to avoid any data loss.
  • Be aware that scanning a synced file may cause that file to be downloaded onto your PC - make sure you have room.

Further information:
More information on creating a local folder synchronized using the Dropbox desktop app:

Microsoft OneDrive:

Method 1

The local OneDrive folder can be scanned but the files will need to be downloaded if you are doing a content scan. This is usually triggered automatically by the scan, but if not you can right click on files/folders in Windows Explorer and select 'Always keep on this device' to download locally.

Important note:  You may need to uncheck the "Advanced Search Options"->"Don't Follow NTFS Mountpoints and Junctions" setting in Duplicate Cleaner for the subfolders to be scanned.

Method 2

OneDrive can also be mapped as a network drive so that the files in the cloud can be scanned directly. Instructions for mapping to a drive letter can be found at the link below.  Once mapped the drive letter can be scanned as usual in Duplicate Cleaner. Bear in mind that scanning a network drive of this type is much slower than scanning locally. Also any file deletion is permanent (there is no recycle bin).

External link: Mapping OneDrive as a network drive

Google Drive

You can get the Google drive app for Windows here-

Download - Google Drive