Problems running the Blizzard Downloader or Installer are often caused by invalid permissions. This occurs when file permissions are broken during extraction or the directory's permissions prevent the application from opening. Click the links below for relevant troubleshooting guides:
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If you have tried all of the steps for your operating system and still require assistance, please visit our Technical Support Forum (World of Warcraft) (StarCraft II) (Diablo III) (Hearthstone) or contact us.
Article ID: 3600036