Windows 10: 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.

:)

 

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

 

Preview and thumbnails of pdf files are not available

Hi Michelle, my name is Martin and I'm an Independent Advisor. I'll try to help you here.

Preview and Thumbnails of PDF files can be disabled on your PC . . .

I suggest that you follow steps below to enable this feature

Start Adobe Reader

Tap on Edit in the menu bar and select Preferences

Under Categories highlight General

Put the checkmark next to the box Enable PDF thumbnail previews in Windows Explorer

I also recommend the article - Enable thumbnail of PDFs in Windows Explorer to get further information

https://helpx.adobe.com/acrobat/using/enable-pd...

 

Windows Explorer crashes and thumbnails problem

Hi, I hope you can help me.
Windows Explorer is no longer showing thumbnails on files played by Windows Media Player. I've run cmd and regsvr32 shmedia.dll and regsvr32 shimgvw.dll. That seemed to solve the problem...but it created a different one. Now when I try to open a folder on an external hard drive it crashes. I read in an old 2008 post it was an avi file causing the problem and suggested the run cmd regsvr32 /u shmedia.dll. That solved the opening problem but recreated the thumbnail problem. Any help to achieve both functions would be greatly appreciated. Thank you.