This error occurs when the Blizzard Update Agent is unable to connect with our server. Follow the steps below to resolve the issue.
- If you're using a wireless connection, optimize your internet connection.
- Proxy servers can cause connection issues and may be enabled by mistake or by a malicious program. Disable your proxy.
- Update Adobe Flash Player to resolve any issues an outdated plugin may cause.
- You may experience errors when Blizzard Update Agent files are missing or corrupt. Delete the Battle.net Tools folder to have the Update Agent automatically re-create necessary files.