Battle.net servers are sometimes taken offline for maintenance. While we try to keep these occurrences and their duration to a minimum, maintenance is periodically required to fix issues that would otherwise negatively affect your gameplay experience.
Follow BlizzardCS on Twitter for any information relating to server maintenance and try again at a later time.
Tried everything here?
If you have tried this and still require assistance, please visit our Technical Support Forums (World of Warcraft) (StarCraft II) (Diablo III) (Hearthstone) (Heroes of the Storm) (Overwatch) or contact us.