Well, I can only say after I have hidden it some months ago, it has never came back (on multiple systems). There could be other factors at play. I'm pretty sur

Well, I can only say after I have hidden it some months ago, it has never came back (on multiple systems). There could be other factors at play. I'm pretty sure even an update changed from recommended to important will stay hidden too. Though, I wouldn't be surprised to learn that can be overridden. At least Windows Update makes it obvious when it (Windows 10 installer) returns in some form. EDIT: clarified last line.