I suspect some artistic types may mistakenly place too much importance on originality. Originality is certainly important, but not in that way.
I also found the navigation confusing. Sometimes, the choices seem from different categories. An example: Microsoft Store, Windows Software, Office Software (all under the heading "Store"). For me, all three could lead to a place for buying Office. Two of them do; the term "Windows Software" seems exclusively reserved for OS versions. I think Excel, Word and the like are "Windows Software" (this is a tough one. "operating systems" probably is too technical. Maybe just "Windows"?)
Also: the Store (at http://www.microsoftstore.com/store/msstore/home?WT.mc_id=MS...) has a link to "other Microsoft Sites". One of these is Labeled "Microsoft Store". I would either remove t link, or change the text to "all Microsoft sites" (even though that likely is a lie)
Or
Store > Office Software > scroll > Office for Mac
I cannot check the second one at the moment. Microsoft now apologizes that that site isn't available from my country, in a minimalisit way (one line of text, no HTML in sight)
The visual focus of the page is a carousel of bland stock images. A smiling person on a laptop representing Office, a group of people climbing a mountain to represent Visual Studio. A crass waste of space.
Everything between the carousel and the footer is just filler. Nobody goes to the Microsoft homepage because they want to 'Discover' Windows or Office, or because they want to see some vapid corporate news.
Everything else is just navigation. An enormous amount of redundant navigation. Missed the link to Windows in the header? Don't worry, we put one in the carousel as well. Miss that too? You silly billy, we put one under the 'Discover' heading just for you. Miss that one? You should really get your eyes tested, but in the mean time, we put another link the footer for you.
Compare this to the Apple homepage. No stock images, just one big image of their latest product. A small number of interesting product updates (even if they are of the "A letter to our customers regarding Maps" kind of interesting) and navigation. Done.
If a company doesn't have its own genuine material to feature and its own damn image, just leave it out!