This error means the Blizzard Launcher does not have permission to create a folder on your computer. This is usually caused by a conflict with another program or a permissions issue. Follow the steps below to resolve the error.
Tried everything here?
If you have tried all of the steps for your operating system and still need assistance, visit our Technical Support Forum (World of Warcraft) (StarCraft II) (Diablo III) (Hearthstone) (Heroes of the Storm) or contact us.
Article ID: 100566