I used to be able to select a file in the standard File Explorer to see a preview in the Preview Pane, for many common file types. However, I've recently noticed that that doesn't work anymore for some file types.
- JPG and PNG: some folders show no thumbnails for any images, other folders show thumbnails for all images, still other folders show thumbnails for some images but not others (of the same file type). No images will show a preview in the Preview pane.
- TXT files no longer provide a preview in the Preview pane.
- BAT, RTF, PDF, and MP3 always provide a preview in the Preview pane.
Things I've tried:
- Ensure that the Preview pane is on. It is – it just says "No preview available" for some file types.
- Ensure that
Folder options > View > Always show icons, never thumbnails
is unchecked. - Ensure that
Folder options > View > Display file icon on thumbnails
is unchecked. - Run
gpedit.msc
and changeTurn off caching of thumbnail pictures
. - Run
gpedit.msc
and changeTurn off the display of thumbnails and display only icons
. - Run
gpedit.msc
and changeTurn off taskbar thumbnails
. - Change file associations.
- Ensure that
Advanced system settings > Performance settings > Show thumbnails instead of icons
is checked. - Ensure that
Advanced system settings > Performance settings > Save taskbar thumbnail previews
is checked.
Things I've seen suggested but not tried:
- Uninstall Java 8. I've never had Java on this Windows install.
- Reinstall Windows. I would only go for the nuclear option for a critical problem, like boot failures.
- Delete all
.db
files inC:\Users\user\AppData\Local\Microsoft\Windows\Explorer
. I know that cache files are generally safe to remove, but I am loath to delete the sort of file that requires ending Windows Explorer first. I also don't see how that would fix the Preview issue.
And yes, I realize that I can simply press Enter to open a selected file, but the thumbnail/preview is a basic feature that used to work and I like it when things work.
How do I get thumbnails and previews to display again?
Best Answer
In order to get your thumbnails working again, you have to uninstall Java 8. It is funny, but true. For me, only the uninstalling of Java 8 helped; images were shown instantly afterwards. I tried a lot of different things before, given things by several forum discussions. After fixing the issue, you can install Java again, of course.