What registry key turns on/off Automatic Update?
HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate\AU Value: NoAutoUpdate Type: REG_DWORD Data: [see below] 0 = Automatic Updates are enabled. (default) 1 = Automatic Updates will be disabled. If you’re using a third-party patch management application or you like to “let it ride,” then disable Automatic Updates. Otherwise, keep this value at “0” so that Microsoft security updates are automatically installed as needed. You may need to add this registry key and value to your system if it doesn’t already exist. Read more about configuring automatic updates. 4. How can I require users to enter Ctl-Alt-Delete to log in? HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon Value: DisableCAD Type: REG_DWORD Data: [see below] 0 = Users must press Ctl-Alt-Delete to log into the system. (Default for domain joined systems) 1 = Users do not need to press Ctl-Alt-Delete to log into the system. (Default for nondomain joined systems) Unless Auto Login is enabled (see below), users must alwa