Windows Store in Windows 8 is the first and the only source of Modern-UI apps. You can download apps from the built-in Store app in Windows 8 but, this app can’t be uninstalled like other Windows 8 apps. But, it can be disabled easily to restrict access to Windows Store.
Disabling the Store...
access restriction
administrative templates
college use
disable store
group policy
instructions
modern ui
storeapplication
user configuration
windows 8