Install Updates then Shuts Down Your PC

! Exclamation point with an orange color around such sign that tells "Install updates then shuts down your PC- it's what I saw every time I attempted to shuts down my PC or when I shuts down using the command, it's what it did on my PC for around 3 days already. That is from Microsoft update and I guess it bring good to my PC. It's just that this is unusual to me. All I can remember was I checked the update on my anti-virus software that it will update itself every time there's new for update. It's important because if not done, it slows down the PC. I could not complain because it is my PC's good and absolutely for me on the aftermath. The thing is that Microsoft also does and it became usual already. Before it only update periodically but now (as I said) the Microsoft updates every time I shuts down this PC. Well, there's no danger in updating and it does itself then shuts down after wards. So, I guess no big deal but for good. That's it! Ooh by the way, as I do this post I am also running the anti-virus sweep. So far, I can see one Trojan virus in the list among the cookies but it's okay because my anti-virus/anti-malware software will take good care of it. Have a good day!