QuickBooks Error 12007 The QuickBooks error 12007 happens when you download payroll data or update QuickBooks Desktop. The application needs internet access to operate, and this problem arises when it fails to meet that requirement. The problem can occur for two reasons: either incorrect QB configuration settings or an improperly installed internet connection. In addition, problems related to the browser, antivirus software, or firewall settings mayalso trigger this error. Wh