This seems to be pretty widespread, since a customer at worked called us this morning with this issue, and when I checked it on my end I was also having it. I checked the office desktop, my Chromebook, both desktops at home, and Chrome on my phone; only the last one loaded the page successfully. MSN loads just fine in Firefox and Edge (even the Chromium-based beta). Clearing cached data and cookies doesn't fix it, nor does opening the page in an Incognito tab.
I've noticed that in the other browsers, there's a banner announcing an update to the privacy policy at the top of the page, while in Chrome no such banner appears, and the page gets stuck with "https://www.msn.com/g00/?i10c.encReferrer=" in the address bar; I suspect the Chrome loading bug might be related to that banner.
Also, this bug causes searches from the Bing search bar on the page to simply open another copy of the MSN homepage in a new tab; the search itself doesn't load.