When I start the launcher I get:
"failed to download a required file. Please check your internet connection and try again"
then the launcher closes. Using PC Win 7. Worked fine until server update by Blizzard a few days ago now can't even launch. Region is Asia. (Oceania)
I tried to manually download the update file nothing worked. Tried multiple restarts and disable anti virus, tried reset of router multiple times. Nothing worked.