Some networks require an 802.1X authentication to connect to the internet. This can prevent Blizzard games from connecting. Use the following steps below to check and see if 802.1X authentication is enabled.

  1. Choose Apple menu > System Preferences.
  2. Click Network.
  3. Select the active network connection (indicated by the green dot). 
  4. If you have a 802.1X connection, an additional field will appear with the connection info. 
  5. Select Disconnect if 802.1X is active.