Windows Update is a very important service that until Windows 10 you had the choice of how Windows would update itself, or not. Windows 10 however, now has the policy of always installing windows updates- when it wants to. Several times I've needed to use my computer only to be hit with 'Now Updating Windows' and having to wait 5 to 40 minutes for an update to take place. This is simply unacceptable. You used to could stop the service, but Windows now restarts even that. Click below to Watch a video on how to disable it.