Windows Defender has become more dependable and robust. I back it up with the paid deluxe version of Malwarebytes which updates automatically. The various versions of "so called free anti-virus protection" are worth exactly what you pay for them - zip - and many times load your computer up with bloatware which can make your computer run slower.
You might want to look at the Win 10 update history to see which updates have been installed. Which usually takes place (again automatically) when the computer is online and an appropriate update is available. Hauptwerk itself has nothing to do with how and when these updates take place.
I've found it best to let Windows 10 do it's thing and not try to out think the Microsoft engineers. Years ago that wouldn't have been my position. But that has (thankfully) changed. For sure, the old saying applies, If it ain't broke don't (look for ways to) try to fix it.
Rgds,
Ed