Permissions may break when you update OS X or install new software, preventing Blizzard software from operating properly.

To repair Application Support file permissions for Battle.net or Blizzard folders:

  1. Open Terminal, located in /Applications/Utilities.
  2. Type or copy and paste the following command for the affected application:
    • Battle.net: sudo chmod 0754 ~/Library/Application\ Support/Battle.net
    • Diablo III/StarCraft II: sudo chmod 0754 ~/Library/Application\ Support/Blizzard
  3. Press Return.
Note: You may be prompted for your administrator password when using the commands above. You may not see characters appear when typing, though it will accept your password.