How to Fix QuickBooks Error 6123: Step-by-Step Guide

QuickBooks Error 6123 typically occurs when opening a company file, restoring a backup, or during a network setup. It often relates to issues with the company file, network configuration, or damaged QuickBooks installation. Resolving Error 6123 involves troubleshooting steps like updating QuickBooks, checking firewall settings, verifying file permissions, or using the QuickBooks File Doctor tool to repair the issue.