ZOS_MichelleA wrote:Hello there, Arwen! We are sorry to hear that you're having difficulties setting up a controller. At this time, ESO does not officially support controllers, but we are looking to add this functionality in the future and are currently in the early stages of adding it.
In the meantime, we recommend stopping by our Add-Ons & UI Mods section on our official website: http://forums.elderscrollsonline.com/categories/EN-add-ons-ui-mods. There are several great third-party controller layouts shared, and we're sure that the players who frequent this sub-forum will be happy to work with you to find a good setup in the meantime.

This has been known since January, and it is even mentioned in theofficial help and supprt page.
/script function IsInGamepadPreferredMode() return true end
Type that into te PC version, hit enter, then press Alt to see its progress. Mouse wheel goes up/down
Honestly, using a controller is what has kept me playing this game.
My work involves me typing and using a mouse for extended periods of time, and after doing that for many hours I just don't have the endurance left to do it again in ESO (guess I'm getting old). Being able to recline in my office chair with an Xbone controller just transformed the game for me.