One or more of your game files are corrupted and can’t be opened. Follow the steps below to troubleshoot the issue.
- If you receive this error while installing from a disc, remove the disc and download the game client instead.
- If you're using wireless internet, try switching to an optimized wired connection.
- Security software may prevent the Battle.net Update Agent from running properly. Disable or temporarily uninstall security programs.
Tried everything here?
If you have tried the above steps and still need help, please visit our Technical Support Forums (World of Warcraft) (StarCraft II) (Diablo III) (Hearthstone) (Heroes of the Storm) (Overwatch) or contact us.