Windows 10: Preview Pane not working for PDF or STL files, it does work for txt files

The Windows 10 Preview pane does not work for all file types. PDF and STL do not work. TXT does work. STL and PDF I get "No Preview Available", double clicking opens them just fine in 3D Viewer or Edge respectivly.I've selected 3D Viewer as the default appI've checked the Preview handlers option, it's on I've ran sfc /scannow, no issues I ran the File Troubleshooter, no issuesIt still doesn't work.Fresh install of Windows 10 Pro, 22H2.

:)

 

Windows Explorer Preview Pane Stopped Working for PDF Files

I've used the preview pane in Windows Explorer for years to preview several file types. Just last week the preview of PDF files suddenly stopped working. Instead of displaying the contents of the file, it shows a first line in a large font that says the following:
Index of C:\Users\MyName\

Below that is a long list of folders. I haven't changed any settings recently in either Windows or Adobe Acrobat Reader DC, which is my default PDF reader. The preview pane works fine for .eml, .docx and other types of files. Any ideas?

Windows Version 21H1 OS Build 19043.1586

 

No PDF viewer in File explorer preview pane

Hi Steve,

Conflicts with the program settings is one of the possible reasons why you are unable to view the PDF preview in the File Explorer Preview Pane. We suggest that you try the troubleshooting steps in this

thread, and go to the post that was provided by Michalis_Georgiou
on October 24, 2017 in the 2nd page, and check if you will still encounter the same issue.

Should you need further assistance, don't hesitate to get back to us.

 

Windows 11 File Explorer Preview Pane for PDF files not working consistently

I am running Windows 11 version 21H2 patched up to date and have noticed this problem recently, although I am not sure exactly when it started in relation to recent patches.
When I open a folder the preview pane shows "Select a file to preview".
Selecting a .jpg file shows the preview.
Selecting a .doc file shows "No preview available" - expected as I do not have Microsoft Office.
Selecting a .pdf file causes the preview pane to go blank.

My solution is to untick the Show Preview Pane option, close explorer, open explorer, tick the Show Preview Pane option.
Selecting a .pdf file now shows the preview. (This does not work without closing explorer and reopening it.)
Has anyone else experienced this, and more to the point, does anyone know of a fix?