You can try to open the .GIF files using Windows Photo Viewer by following the below mentioned steps:
Right click on any of the gif images, open properties, click Change.
In ‘Open with’ window, open Other Programs and select Windows Photo Viewer as default program to open with.
Click Ok, all your gif images will open in Windows default photo viewer.
If you have picture files with .gif extensions, for example, they will not appear in Photo Gallery and can't be edited using the Fix pane. If you want to see these pictures in Photo Gallery, you should change their file type to a format that Photo Gallery can display (JPEG is recommended).