This error occurs when you have connected to our patch server but you cannot download patch information. Follow the steps below to resolve the issue.
Update your drivers and operating system to resolve any compatibility issues.
Close all other applications to resolve software conflicts and free up resources.
Run the Blizzard Battle.net desktop app in Administrator Mode to address many installation, patching, networking, and start-up errors.
Update or temporarily uninstall any security programs, which may mistakenly identify the login module as a security threat.
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