Updating a registry key command
Go to settings and see if the options are greyed out for ‘Important updates’.If so, then it’s controlled by administrator/domain policy and can’t be edited. Note that this will not work if domain group policy is enforced and users are prohibited to change the settings.In Widows 7, we can find out if a GP is enforced or not by opening windows update window.There are seven predefined root keys, traditionally named according to their constant handles defined in the Win32 API, or by synonymous abbreviations (depending on applications): Like other files and services in Windows, all registry keys may be restricted by access control lists (ACLs), depending on user privileges, or on security tokens acquired by applications, or on system security policies enforced by the system (these restrictions may be predefined by the system itself, and configured by local system administrators or by domain administrators).Different users, programs, services or remote systems may only see some parts of the hierarchy or distinct hierarchies from the same root keys.
To clarify, I'm not talking about enabling 'Automatic Updates'. Registry values may contain backslashes in their names, but doing so makes them difficult to distinguish from their key paths when using some legacy Windows Registry API functions (whose usage is deprecated in Win32).The terminology is somewhat misleading, as each registry key is similar to an associative array, where standard terminology would refer to the name part of each registry value as a "key".The kernel, device drivers, services, Security Accounts Manager (SAM), and user interface can all use the registry.