How get Windows Photo Viewer working in Windows 10

As I mentioned above, this can be done by manually editing the Registry yourself. Follow these instructions:

  1. Regedit
  2. Go to the following Registry key:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Photo Viewer\Capabilities\FileAssociations

    If you do not have such a Registry key, then just create it.

  3. There you need to create a bunch of string values, as mentioned below:
    ".bmp"="PhotoViewer.FileAssoc.Tiff"
    ".dib"="PhotoViewer.FileAssoc.Tiff"
    ".gif"="PhotoViewer.FileAssoc.Tiff"
    ".jfif"="PhotoViewer.FileAssoc.Tiff"
    ".jpe"="PhotoViewer.FileAssoc.Tiff"
    ".jpeg"="PhotoViewer.FileAssoc.Tiff"
    ".jpg"="PhotoViewer.FileAssoc.Tiff"
    ".jxr"="PhotoViewer.FileAssoc.Tiff"
    ".png"="PhotoViewer.FileAssoc.Tiff"

    Don’t be confused with theĀ PhotoViewer.FileAssoc.Tiff line, the actual Photo Viewer command is the same for all file types. You will get something like this:

Right click the file to open with Windows Photo Viewer, and safe as default.