Under WIN8, Metro applications are installed under C:Program Fileswindowsapps (hidden folders), and you need permissions to open.
Uninstalling some applications in the Metro interface does not necessarily remove the entire folder entirely, or some programs are corrupted and need to be reinstalled, prompting "failed to install successfully" because the previously installed applications were not completely cleaned up. Also, right-clicking deletes a folder and often prompts for no permissions.
You can use Windows PowerShell to completely remove the folders for these applications.
In the Metro interface, the right mouse button selects "All Apps" at the bottom, and the "Windows PowerShell" program is found under the Windows System menu. Click Open (or right-click "Run as Administrator").
After opening,c:usersname>, enter the "get-appxpackage" command, (you can copy the text, and then in the input interface "right mouse click" To paste), enter. You can view a directory of all programs under the Metro interface.
Enter "Remove-appxpackage" plus "space" after c:usersname>.
Locate the name of the program you want to remove completely, locate the folder location (packagefullname), select the Location folder name, right-click the mouse, and paste the file name you want to delete in the input location. Click Enter to delete.