A Microsoft application for managing email, calendars, contacts, and tasks across devices and platforms.
Microsoft continues to push universal windows platform which means they are shoving one size fits all methodology into their business model. The result is clear that the desktop experience has become a second class OS.
I don't use the search feature, not only because it doesn't work, the windows search doesn't work either, but because I don't want it because it hasn't worked since Windows 2000. What's extremely annoying is that I can't turn off the search dialog or shrink it and put the title back so that I can actually click the title area to activate Outlook when it's obscured by other windows. Don't get me started on Windows 10 having NO window borders and the productivity killer that provides.
Microsoft is IT because they made themselves a monopoly early on. Sure there's a lot of infrastructures that don't host Microsoft but the number's weight out that the Microsoft OS prevails in most run-the-country (backbone) businesses offices.
They are never going to revert, it's been 20+ years since their file system search actually worked, why would they bother with this, IMHO.