Before: I recently noticed my Windows 10 was not showing the thumbnail preview icons. It didn’t matter how big or small the icon was, it would show the default windows image for the file type. This is not very useful if one is looking at a folder full of icons.

default thumbnailsAfter: Icons showing correctly.

Updated thumbnails2

Solution:

  1. In Windows Explorer click on the Options button on the ribbon,
  2. Under the View tab under Folder options remove the check against the box “Always shows icons, never thumbnails.
  3. Click Apply.
  4. Click OK.

Steps for showing thumbnails