I’ve avoided posting about this for a while mostly because I thought Windows Photo Viewer would get removed. But it’s still there in Windows 10 1909 and it’s still good - even though it doesn’t play animated GIFs and hasn’t been updated since the time of Windows 7. Here’s how to enable it in Windows 10.
Enable Windows Photo Viewer
To enable Windows Photo Viewer so it shows up as an option to open image file types with, copy and paste the text below as is into a new text file and save it with a .reg extension.
Then import the REG file into the registry using the REG IMPORT command. You will need an elevated command prompt.
The program will not show up in the Start Menu as a program or in Settings as an default option for photos, but you will be able to choose it as an option to open files with.
Right-click > Open with > Choose another app > more apps > Windows Photo Viewer You could also import this REG file as part of an MDT or SCCM Task Sequence, using Group Policy Preferences or a simple startup script.
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