QuickBooks is a widely used accounting software that streamlines financial tasks for businesses. However, users might encounter errors while using the software, and one such error is QuickBooks Error 6123. QuickBooks Error 6123 is a common issue that users may encounter when opening a company file. This error message can vary, but it generally indicates a problem with accessing or working with a company file. The error can occur due to various reasons, but it's crucial to address it promptly to prevent any disruption in your financial tasks.