Released on August 13 2015. It affects the following platforms: PC, Mac, PS4, Xbox.
Hotfix 8/13/15 – Hallin's Stand Mages GuildEdit
We just completed a hotfix on all ESOTU megaservers. This patch hotfixed an NPC in the Hallin's Stand (Bangkorai) Mages Guild that was attackable and should not have been.
You will not need to relog or download any patch for this to take effect.