QuickBooks Error 12057 occurs when QuickBooks is unable to connect to the internet, leading to failed software updates and payroll download issues. This error is often caused by incorrect network settings, firewall or antivirus restrictions, and SSL certificate misconfigurations. Common symptoms include update failures, error pop-ups, and limited online functionality. To fix it, check your internet connection, configure firewall settings, enable SSL in Internet Options, and update QuickBooks. If the problem persists, professional assistance is recommended. Call 1-800-223-1608 for QuickBooks Support and get 24/7 expert troubleshooting to resolve Error 12057 and restore seamless updates.