In the Windows operating system based computer, you can use so many applications and programs. These applications are very much compatible with the Windows 8. You can install all the apps or programs in Windows 8 using Windows 8 app store. But sometimes while you try to open the app store, you get store app not working in Windows 8. It is really a very critical error issue. Sometimes you also see that the opening of the Windows 8 app store is slightly different in different devices. It happens mainly due to the corruption of the registry associated with Windows app store directory. In this situation, you should go with some manual or automatic error fixing methods. Advanced System Repair tool will help you to fix app store not working in Windows 8 automatically.