Determines whether screen savers used on the computer are password protected.If you enable this setting all screen savers are password protected. If you disable this setting password protection cannot be set on any screen saver.This setting also disables the "Password protected" checkbox on the Screen Saver dialog in the Personalization or Display Control Panel preventing users from changing the password protection setting.If you do not configure this setting users can choose whether or not to set password protection on each screen saver.To ensure that a computer will be password protected enable the "Enable Screen Saver" setting and specify a timeout via the "Screen Saver timeout" setting.Note: To remove the Screen Saver dialog use the "Prevent changing Screen Saver" setting.
Control Panel\Personalization
User
At least Windows 2000 Service Pack 1
HKCU\Software\Policies\Microsoft\Windows\Control Panel\Desktop!ScreenSaverIsSecure
ControlPanelDisplay.admx