Officially, the policies for the Microsoft Store says that apps must have 'distinct and informative metadata' and 'provide a valuable and quality user experience'. Similarly, app name reservations are also being nullified which means that if your app is unpublished, there's no guarantee that you'll be able to republish it under the same name. Additionally, Microsoft is also asking developers to delete any promotional campaigns for their apps to prevent advertising charges. This includes publicly available apps as well as private beta apps. In its latest review of the Store, Microsoft is evaluating if the published apps are good enough to be listed in the Windows Store. ' Neowin reports that app developers have been receiving these emails over the past couple of days: ' Microsoft is sending emails to some Windows Store developers informing them that their apps have been removed from the Store for violating its quality standards.' Microsoft is purging a lot of low quality apps from the Windows Store