If your Windows 10 is upgraded from Windows 7/8.1, you just need to set Windows Photo Viewer as default app to find it back.ġ) Right-click on a picture, click Open with to select Choose another app.Ģ) Click More Apps and scroll down to find and click Windows Photo Viewer. Windows 10 is upgraded from Windows 7/8.1 Windows 10 is upgraded from Windows 7/8.1 CASE 2. Windows 10 is from a clean installation Case 1. Follow the methods below, restore Windows photo viewer right now!ĬASE 1. If you are using Windows 10 operating system, maybe you noticed Windows photo viewer is just missing.