QuickBooks error 12007 occurs when the server is inaccessible due to a network timeout, connection error with the internet, or firewall settings issues. You can resolve QuickBooks error 12007 by resolving the internal QuickBooks desktop issues and internet errors. Another solution is to modify the QuickBooks updates. Firstly, you will need to disconnect the Wi-Fi router and examine the internal problems. Now launch QuickBooks, go to the Company file, click press CTRL + K keys on the keyboard and click Edit . Now you can open the payroll setup option and verify if an update error 12007 resolves or not.