You will see a message that the keys and values contained in the WindowsPhtoViewer.reg have been successfully added to the registry.At the registry editor warning, click Yes to continue.Double-click the WindowsPhotoViewer.reg file to import the data into the registry and create the necessary keys and values.In this example, let’s rename the file to WindowsPhotoViewer.reg. At the rename warning click Yes.txt at the end of the file, you may need to unhide the file extensions in Windows File Explorer. Next you need to rename the file to something like WindowsPhotoViewer.reg, but if you don’t see the file extension.Thanks to Edwin for providing this code on. Download this text file called WindowsPhotoViewer.txt.

The exported file will have the extension. Name the file something like Full Registry Backup.Highlight the blue Computer icon in the top left-hand corner, then right-click and select Export. First you should backup the entire Windows registry.When prompted if you want to allow the app to make changes to your device, select Yes.

In Windows 10 search box type regedit and press Enter.

Working with Windows registry is like doing a brain surgery on your Windows computer. WARNING! The following procedure requires modification to the registry, which should only be done by trained professionals who know how to work with Windows registry. Here’s the step-by-step procedure for using the Windows Photo Viewer in Windows 10. I am just pointing out my preference and if there are folks out there who want to use Windows Photo Viewer in Windows 10, I want to show them how they can bring back the application. However, I am not suggesting that you start using Windows Photo Viewer instead of the Photos app. One reason that I prefer Windows Photo Viewer over Photos app is that I am used to it.

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