It's really not a great idea. Either you don't run Windows, and it's not an issue, or you just blocked Windows Update and other important services Microsoft provide that work in tandem to keep your systems safe.
> Either you don't run Windows, and it's not an issue,
Not a solution for those of us who run Windows boxes for various reasons...
And to clarify, I plan on occasionally letting updates through (I'm already on Windows 10) but this is a great way to prevent data collection / backdoor activation, which I hadn't considered. Seems like the simplest way to add a lot of privacy to Windows.
Yet that's not what the parent and its parent were talking about/implying. It clearly said "blocking all Microsoft IPs".
And considering the Windows 10 upgrade was being pushed through Windows Update I'm not sure how you'd want to prevent that specific update by blocking an IP and not interfere with Windows Update as a whole.