This is 100% scam. I hope you didn't fall for it. The trick they used here is extremely sneaky.
The Microsoft page you saw is a real Microsoft website. The confusing part is how the scammers made it show a fake phone number.
On that Microsoft page, there is a search box. If you type anything into that box, the site will display what you typed as a “search result.” For example, you can type your name there, and click on the spyglass icon, and your name will show up under the search box.
Here’s what they did:
- You probably clicked a Google ad or something that looked like a Microsoft support link, as the URL you shared shows that you clicked from some paid ad (it contains the ad campaign ID).
- That ad sent you to the real Microsoft website, but it added extra text at the end of the web address, that's what we call URL variable. That extra text told the Microsoft page to automatically search for a specific phrase. The phrase the scammers added was “Call +1 (877) 868 4558 Microsoft Customer Service Desk 24×7.” Because the page was instructed to “search” for that phrase, the website simply showed it on the screen — making it look like Microsoft posted that phone number.
So the number wasn’t on Microsoft’s site at all. It was just "typed" in by the scammer, by transferring the phrase via URL variable, and the website displayed it because that’s how its search feature normally works.