Common Problems
This error is caused by a problem downloading or writing new update data. Try the following steps to resolve this error.
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Update or temporarily uninstall any security programs, which may mistakenly identify the login module as a security threat.
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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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Run the repair tool to repair any damaged game files.
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Disable any proxies that may interfere with the login module.
Advanced Troubleshooting
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Try creating a new administrator account to resolve permissions issues.
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If you're using a VPN, try removing it.
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Run a security scan to remove any viruses or malware infections.
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Uninstalling and reinstalling the Battle.net App may resolve rare launcher issues.
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If the problem persists, uninstall and reinstall the game.
Tried everything here?
If the steps above did not resolve your problem, visit our Technical Support forum or contact us.
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