What exactly does KB2952664 do?

Ironically, THIS is a big reason that I am not upgrading to Win10.  They are proving that they are forcing inappropriate updates on us.  Well, in Win10 you can't even choose -- you either take NO updates (not even security fixes), or you take them all.

Their latest trick of not supporting late processors with anything less than Win10 makes be believe that when I get a new PC it's either going to be Win10 or not microsoft at all, and because of all my purchased Windows software, I'm likely to be stuck with Windows.  This is the first time I have actually given some thought to breaking away from Windows.

As is I have to vet everything they release.  Don't believe that they are innocently causing it to be unhidden -- I might've considered that except that these traps are extremely evasive in what they claim to do, when you read the details.  As I see it, if they don't give a good reason to take it, I don't.  PLUS I no longer apply them on a timely basis because I have to wait and vet each of them.  I no longer trust them.  BUT remember,with Win10 you have no choice.

That is what M$ risks by the methods they have used = People turning off windows updating completely.

Can't say I'm very far from excluding Optional software all together and see what shows up or not :)

"Hiding is the first step"

But it doesn't help because Microsoft automatically unhides some of the hidden updates. Eg. KB3035583!

Please, read the whole thread KB3035583 Installing Windows 10 using Windows Update?.

Yep well M$ considers it a different update because it has been updated = new version

I don't know why M$ unhiding an update is really a problem most people if they don't want 10 or other 10 telemetry updates can and should be reviewing updates before downloading and installing them.

Just common sense otherwise go on automatic and go with the flow :)

Or be proactive and administrators and choose for yourselves ;)

This the list of 10 related updates I choose to not download and install

I do have others relating to Remote desktop features/ crazy fonts and time zones/... ;)

I don't know why M$ unhiding an update is really a problem most people if they don't want 10 or other 10 telemetry updates can and should be reviewing updates before downloading and installing them.

Aside from it simply being duplicitous, the problem for users who take the time to research an update and subsequently choose to hide it is that it is an annoyance for the same update (albeit a newer version) to reappear. If I do not want a particular piece of nagware or spyware, I do not want the revised version of the same.

The problem for MiscroSpy is that their increasing underhandedness in this area is becoming more apparent to more users. The growing awareness of these practices and consequent mistrust of Windows Updates is already causing the strategy to backfire - like many, I accepted all "important" updates without question for years, but no more, ever. I do not accept a single update without looking into exactly what it does and whether I really need it, and when in doubt, I leave it out. Also like many, when these underhanded tactics became apparent, I reviewed all previously installed updates and removed any that were suspect.

As for Windows 10, a whole lot of folks (myself included) who had been interested in taking a serious look at it have lost interest because of the forced updates. Microsoft may believe it has a captive market, and among market segments that don't really care about such esoterica as privacy and having a say over what happens on devices one owns, maybe it does. But the rest of us will find alternatives when we have to.

The moment a company believes itself to be invincible is the moment it begins the process of proving itself wrong.

Caveat emptor indeed.