Common Problems
One or more of your game files are corrupted and can’t be opened. Follow the steps below to troubleshoot the issue.
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If you receive this error while installing from a disc, remove the disc and download the game client instead.
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If you're using a wireless connection, optimize your internet connection to rule out a connection issue.
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Disable or temporarily uninstall any security programs, which may mistakenly identify the login module as a security threat.
Advanced Troubleshooting
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Try closing background applications to resolve any software conflicts.
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Delete the Battle.net Tools folder to automatically rebuild outdated or corrupt files.
Tried everything here?
If you have tried these steps and still require assistance, visit our Technical Support Forums (World of Warcraft) (StarCraft II) (Diablo III) (Hearthstone) (Heroes of the Storm) (Overwatch) or contact us.
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