https://forums.adobe.com/people/Upbeat+Almond wrote
Help ... Are there any ideas out there as to how these thousands of duplicates can be deleted???
Hi Upbeat Almond,
I am using PSE2019 on Windows 10. To delete multiple photos using the Organizer what I do is left-click and drag my mouse across pics I want to delete. Then, I right-click the mouse on the selected items and select "Delete Selected Items From Catalog". I have not tried using the Delete key. I hope this helps!