Meh, just stop using windows, it's terribile in every single way. You could never control what windows does, the whole operating system is proprietary so it can never give you full control over what it does. Now instead of paying money for this nonfree software, Microsoft uses you to collect data and sells it to advertisers(really anyone willing to pay for your data and perhaps the NSA gets a special deal). Effectively and literally Microsoft is changing it's business model to reflect more on Google's. Windows doesn't get spyware, it is spyware. Windows doesn't have users, it has useds. Not to mention how technically inferior it is to other operating systems. It's just now getting out of the box disk encryption and disk compression support and just now getting OpenSSH support after more than 15 years later. Advertising desktop workspaces as a new feature in 2015 is joke, how can you take the crap seriously? I have been using virtual desktops or workspaces in GNU/Linux for over a decade now. BSD also had this.
Read this:
https://edri.org/microsofts-new-small-print-how-your-personal-data-abused/Microsoft's privacy statement:
http://www.microsoft.com/en-us/privacystatement/default.aspxMicrosoft's service agreement:
https://www.microsoft.com/en-gb/servicesagreement/default.aspxMy guess is that the only way to prevent windows from phoning home is to block all network connections or filter them, but either way you will not recieve updates. The network traffic is likely to be encrypted so it would be impossible to see what data is being sent to microsoft even if you monitor all of it with wireshark. It was once possible to manually download the patches without phoning home to microsoft but it is probably impossible now, it would be too much work to do anyway. I doubt anyone still does this. Though imo it doesn't make any sense to care that the updates are forced when the software already installed is already enough force to care about. And even if there isn't any backdoor currently present in windows today there can be tomorrow. But of course we already know that windows having intentional backdoors is irrelevent when they already help the NSA exploit known flaws in windows so that they can spy on people. We know this as fact thanks to Edward Snowden who released the documents that proved it:
http://www.theguardian.com/world/2013/jul/11/microsoft-nsa-collaboration-user-dataThis makes anyone using Microsoft Windows or services a sucker or a willful moron. Of course, all this could be applied to Mac OS and the i-things as well, even Ubuntu as some spyware in it(although it is much less). And there are many other platforms that abuse you as well, but Windows 10 might the worse yet, though it is in tuff competition with iphones and Android isn't much better(only ever so slightly). The best thing to do is just to avoid these companies entirely because they have only been getting worse. It's like trying to get your friend to quit smoking by buying him cigarettes. By continuing to be their useds, they will have no incentive to change and all the more to continue to abuse you.