A new bug for Windows Updates has been reported by many tech sites including Ars Technica.
A spokesperson from Microsoft said, “We are hearing some reports from around the Web regarding machines that are restarting and having automatic updating settings set back to ‘Install Updates Automatically,’ despite having selected to be notified before installation of updates. We are still investigating what caused this matter. As such, we encourage customers to contact support using the options discussed at support.microsoft.com/security so that we can potentially gather more information.”
Source: Ars Technica