For those of you who liked Windows Photo Viewer and bought Windows 10, you were more then likely sadly disappointed with their slower clunky replacement that glitches often.
In some cases, it won’t open at all, leaving you with two options:
Option 1: Reset Photo Viewer
Option 2: Revert back to the old Photo Viewer!
Click the options above to be taken off-site to view detailed directions for each method I dug up while researching the problem.