1. On the desktop, right, the new text document
2. Open Notepad, verbatim enter the following code:
Windows Registry Editor Version 5.00
; Change Extension's File Type
[HKEY_CURRENT_USER\Software\Classes\.jpg]
@="PhotoViewer.FileAssoc.Tiff"
; Change Extension's File Type
[HKEY_CURRENT_USER\Software\Classes\.jpeg]
@="PhotoViewer.FileAssoc.Tiff"
; Change Extension's File Type
[HKEY_CURRENT_USER\Software\Classes\.gif]
@="PhotoViewer.FileAssoc.Tiff"
; Change Extension's File Type
[HKEY_CURRENT_USER\Software\Classes\.png]
@="PhotoViewer.FileAssoc.Tiff"
; Change Extension's File Type
[HKEY_CURRENT_USER\Software\Classes\.bmp]
@="PhotoViewer.FileAssoc.Tiff"
; Change Extension's File Type
[HKEY_CURRENT_USER\Software\Classes\.tiff]
@="PhotoViewer.FileAssoc.Tiff"
; Change Extension's File Type
[HKEY_CURRENT_USER\Software\Classes\.ico]
@="PhotoViewer.FileAssoc.Tiff"
Then save the file
3. The text document file name is changed to "Windows Photo Viewer .REG", note the name was changed from txt suffix to REG
This will pop up to change the extension may cause the file unusable reminder, we do not control, you can click Yes
4. After you change the suffix, you can see the file into a registration document, and we double click to open it
5. We click OK to add the file to change the registry
6. We right click and select a picture file, you can see there are ways to open Windows Photo Viewer, click to see our pictures with Windows open to
