https://bugs.winehq.org/show_bug.cgi?id=57727
--- Comment #6 from Smoerrebroed smoerrebroed@souls-of-midgard.de --- Hmmh, while my installation worked on Monday, I started Battle.net again today and it told me to update WoW once more. This time around I received the blzbntagt00000840 error again. After reinstalling Battle.net everything works. Any ideas?