For example, I was restoring my iPhone to latest iOS last week and to resolve an error while restoration process, I modified some host file of iTunes software and this file was available in AppData folder. But many tools and programs require modifications in their files, if you want to use them in a proper manner. Similarly, MS doesn’t reveal the AppData folder to Windows users in Windows 8 and 8.1, because many important files available under this folder are critical to the health of OS. Not all Windows users are advance users so Microsoft has hidden some important files from all users in Windows OS, because modification or deletion of some important files can make a Windows copy corrupt. For sake of happiness of users, Microsoft has added the start button back in Windows 8.1 and also has introduced the (X) button at the top right of apps’ windows to close or minimize the apps. Microsoft is constantly upgrading its Windows 8.1, because of failure of Windows 8 now it’s concentrating on needs of Windows’ users.