I have a PDF that has over a thousand pages worth of highlighted text. When I open up the comments section, I can see all of the highlighted comments but I cannot select all the comments at once - I can only select the highlighted comments page by page. I am currently running reader DC and I recall in earlier versions being able to select all the comments and deleting them all at once. Can I still do that in reader DC or do I have to go page by page selecting all the comments and deleting them? Any help would be greatly appreciated - thanks in advance!
Try pressing Ctrl+A while inside the Comments List. If that doesn't work click the first comment and then scroll down to the bottom of the list, hold down Shift and click the last one. That should select all of the comments in between and you'll be able to delete them all at once.