Drag and drop doesn't work

For some reason in one of my many computers with both windows 10 and directory opus i cannot drag and drop. I did look at the posted replies but they were not helpful ...among other reasons the corrective reg file is now 404'ed
and yes when i highlight an article it opens it even without a double click
steve

Give the .reg here a try (the link still works; it's hosted on the forum server): Drag & Drop does not work for files or when customizing toolbars