When QuickBooks is updating payroll and the server cannot be reached, the error QuickBooks Payroll Update Error 12007 is triggered. Usually brought on by problems with the firewall, internet security, or network connectivity. In order to fix it, you must check firewall permissions, troubleshoot network connectivity, and configure internet security settings to permit QuickBooks access. For immediate support, call 1.855.738.2784 to speak with our QuickBooks Experts Team.