content: The bottom line is that this would not be an issue at all if you trusted Microsoft to provide high quality patches that always provided added security, functionality, or stability to Windows.  Instead, in reality, Windows Updates cause problems in certain cases, sometimes widespread ones, the quality of their updates has gone down, not  up, and updates are no longer for the benefit of the end user, and could potentially be just another advertising vector or whatnot.  The only rational reason why they would not share what the updates are doing, would be that you wouldn't want them if you knew.