Change Desktop File Icon from Thumbnail to PDF Icon

[BenXu]

PDF files on my desktop are showing the thumbnail of the PDF instead of the icon. I want it to show the Adobe PDF icon instead. How do i fix this? Example explained in the attached.

[radzmar · Accepted solution]

It's a Windows setting and has nothing to do with Adobe Reader in particular. See here: 

https://answers.microsoft.com/en-us/windows/forum/all/windows-10-thumbnail-previews/45c3f7c0-a243-45...

[Firefly]

I have a very similar problem with PDF icons and thumbnails and I'm using an Apple iMac computer running on Venture 13.4.  My problem is that some PDF files are showing up as images when I send them as an email attachment, and the others are showing up as PDF icons.  I want them all to show up the same -- preferably as PDF icons.