I've googled this until I'm so frustrated that I could just spit.
For a long time, I was able to click on a PDF file and see a preview of it in the (I don't know what it's called) lower portion of the Explorer pane (not talking about the Preview Pane on the right side of the display). I can't do that anymore...I can see all the BMP, PNG, JPG, GIF, etc file thumbnails, but not PDFs. I recently updated Adobe Reader & that didn't work, so I uninstalled it. I installed Foxit Reader and that didn't help. I've read things about "preview handlers". I've seen suggestions to edit the Registry, or go to Adobe & download the latest Adobe Reader because that supposedly would fix the "can't display thumbnail" issue, or run someone's Fix program, etc etc.
Nothing works!! It's driving me batty!
I've even tried looking for an add-on program that would restore this functionality. Can't find anything.
Does anyone have any suggestions that will actually get PDF the thumbnails to display again?