The name of each key is a globally unique identifier (GUID), and the default value of each key is a human-readable name for the namespace extension, although this is not the same name as the icon on the desktop. 

To delete an icon from your desktop: 

1. Step through the subkeys until you find the key representing the icon you want to remove from your desktop, delete the key and the icon should disappear. 

Key:[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace]