If File Explorer Preview for PDF is not working or displaying correctly and shows ‘INDEX OF…’ under Network folders, here's what you need to do.

Stop File Explorer From Displaying Frequently Used Folders Toggle Navigate, Preview, and Details Pane On or Off Open Files and Folders With a Single Click Select Items Using Checkboxes in File ...

Given how limited the preview pane already feels in Windows 10, even adding just two more file types feels like a huge improvement.

File Explorer’s search bar supports advanced filters and operators, allowing you to make your search more specific. For example, you can search for files by kind, extension, size, or date modified.