Description:
This setting controls automatic updates to a user's computer.
Whenever a user connects to the Internet, Windows searches for updates available for the software and hardware on their computer and automatically downloads them. This happens in the background, and the user is prompted when downloaded components are ready to be installed, or prior to downloading, depending on their configuration.
If you enable this setting, it prohibits Windows from searching for updates.
If you disable or do not configure it, Windows searches for updates and automatically downloads them.
Note
Also, see the "Remove links and access to Windows Update" setting. If the "Remove links and access to Windows Update" setting is enabled, the links to Windows Update on the Start menu are also removed.