Remove access to the context menus for the taskbar

Hides the menus that appear when you right-click the taskbar and items on the taskbar, such as the Start button, the clock, and the taskbar buttons.

This setting does not prevent users from using other methods to issue the commands that appear on these menus.

Supported on: At least Windows 2000

Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Microsoft\Windows\CurrentVersion\Policies\Explorer
Value NameNoTrayContextMenu
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

startmenu.admx

Administrative Templates (Computers)

Administrative Templates (Users)