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 to resolve any compatibility issues.
Try closing background applications to resolve any software conflicts.
Run the Battle.net desktop app in Administrator Mode to address many installation, patching, networking, and start-up errors.
Disable or temporarily uninstall any security programs, which may mistakenly identify the login module as a security threat.
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