Disable the Ability to Right Click on the Desktop

This tweak removes the context menu that would normally appear when the user right clicks on the desktop or in the Explorer right results pane.

Create a new DWORD value, or modify the existing value, called "NoViewContextMenu" and set it according to the value data below.

Exit your registry; you may need to restart or log out of Windows for the change to take effect.

Registry Settings
User Key:[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]System Key:[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]Value Name: NoViewContextMenu
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = disabled, 1 = enabled)