Every time you open a file which does not have an application registered to open it, Windows 10 and Windows 8 offer you to open the Windows Store and look for an app there. However, the user may not use Store apps/Universal (Metro) apps and prefer desktop apps instead. So the link to look for an app in the Store is useless for those who prefer classic Desktop apps. You can disable the 'Look for an app in the Store' prompt. Here is how it can be done.