World of Warcraft, Hearthstone authentication servers down intermittently

You may have trouble getting online today to play World of Warcraft or other games due to some trouble with Blizzard’s online service.

Battle.net is having issues that is preventing many people from logging into their accounts. This is preventing gamers from playing World of Warcraft, Hearthstone: Heroes of Warcraft, and other Blizzard games. The publisher says that it is a problem with its authentication servers, and it is looking into it.