On this page there’s 2 highlights (view in Baymard Premium) outlining what Microsoft are doing right and wrong.
(Tip: use the arrows above or on your keyboard to navigate all 105 top-level navigation examples.)

The screenshot was taken on December 13, 2013 and depicts Microsoft’s Top-Level Navigation. In total, we’ve reviewed 55 of Microsoft’s page designs. To see them all, visit the full Microsoft UX case study.