Microsoft has a terrible habit of doing that. KB's used to have a predicable URL, they may again, but they keep changing them. Or any of their docs really. It's terrible as those URL's end up in other documents to be killed. This is not really an enterprise friendly way of supporting customers.
Yeah, I always wondered how one of the wealthiest companies on earth could be so poor in linking to their own documentation.
Then I realized that they have a galaxy of consultants and experts that effectively make a living by keeping on top of all issues and fixing them for a fee. So there is little incentive for them to actually be user-friendly: as long as they are "partner friendly" with timely material, that's good enough.
They are not alone in this, btw - pretty much all major platform providers do this, one way or the other.
Particularly since one of their flagship products is a CMS that solves that problem and lets you move documents around without breaking links
I've given up because half the help links in the control panel leads to a bing search without any helpful results at all