Windows 10: PDF icons showing up blank in Windows Explorer when the default PDF viewer is set to Chrome

As of yesterday, 10/22/2024, the icon for .pdf is no longer showing up as the Chrome icon when my default .pdf viewer is set as Chrome. I do not know why the icon disappeared but it makes navigating folders extremely difficult. I have tried deleting my icon cache and restarting, changing my default viewer to something else and back, and replacing the Chrome icon. What is going on Windows? I know that Windows updates happen on Tuesday evenings, so why did this change?

:)

 

File Explorer - Some PDF's show thumbnail image, some don’t

In Windows 10 File Explorer, I see thumbnails for a few of my pdf files but still see the generic Adobe pdf icon for most of them.

• In Windows 10 folder options, the checkbox for “Always show icons, never thumbnails” is unchecked.
• On the Adobe Reader preferences general tab, “Enable PDF thumbnails previews in Windows Explorer” is checked.
• Adobe Acrobat is set as my default PDF viewer.
• I have used Disk Cleanup to delete all my thumbnails to clear and rebuild the cache, yet the problem persists.

Any suggestions on how I can see all the pdf icons as thumbnails?
Windows 10 Pro, Version 1903, Build 18362.657
Adobe Acrobat Reader DC (20.006.20034)

I asked over in the Adobe Acrobat Reader forum a few days ago but have received no replies.





Ron

 

Default PDF viewer in Windows 10

Yea. That's what I have been doing. It works for a little while, but then Windows changes it back to the Explorer PDF Viewer.

 

PDF thumbnails disappeared in Windows Explorer

Hello
Edition Windows 10 Pro
Version 20H2 Installed on ‎28-‎May-‎20OS build 19042.746
Experience Windows Feature Experience Pack 120.2212.551.0
PDF APP: Nitro Pro, Sumatra, Foxit
After the Windows update of mid Jan 21 and the update to Nitro 13.33 Pro the thumbnails of PDF files that have always been visible in Windows Explorer, disappeared. The space of the miniature rests blank; only the small icon of Nitro is visible in the bottom right corner.
If i change the default PDF programs (Sumatra or Foxit) the thumbnails rest invisible, with the exception of the relevant icon. This is annoying. I did not try with Adobe: i need a PDF editor and I have Nitro PRO. The File Explorer was used however it only change the default PDF Icon from large to small (always show icons, never thumbnails).
Any suggestions? thumbnails are convenient. The root appears to be with W. Explorer, not with the PDF app.