

Right click an empty part of the Explorer window and select Refresh from the menu. If there is no immediate change, refresh the window contents.

Except when it does not show thumbnails or previews.

File Explorer in Windows should show thumbnails of images like photos on the disk, which makes finding them easy. You could substitute any one of these preview handlers… if you wanted to register a media file preview handler, you could use as the value instead of using the preview handler for text files.Īt this point, you should be able to select a. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\PreviewHandlers

This key is the unique ID for the Windows TXT Preview Handler, which I figured out by looking under the list of currently registered Preview Handlers in the registry: Once you’ve created that key and selected it, you’ll see a new (Default) key on the right hand side which you’ll want to modify.ĭouble-click on the (Default) key, and use the following text for the value: This key is the unique ID that tells Windows Explorer you want to set a preview handler. Once you are there, create a new key called shellex under it, and then create another key under that one with this name: Next you’ll need to browse down to the ProgID key, where we’ll actually apply the hack: HKEY_CLASSES_ROOT\regfile.
