If you are on US servers do the following.
1) Turn off your computer.
2) Go outside / hang out / watch a movie (spend an hour or two doing this)
3) Turn computer on
4) Open wow then HB and accept the HB update
5) If no update for HB exists repeat steps 1 - 4
while im trying to login i got an error that says im missing one of dll files.
i tried every thing and i.ve got the same error all the time