Make Tech Easier published a tutorial what you can do if the Windows Store app stops working.

Windows Store Not Working? Here's How to Fix It

The Windows Store isn't the most popular store out there and has a tendency to just outright not work. However some of your apps are essential to the system and are only available in the Windows Store, so it's good to have it working. If your Windows Store stops working, here are the best fixes to get it running.

Windows Store Not Working? Here's How to Fix It - Make Tech Easier