The error message QBCFMonitorService Not Running On This Computer denotes an inactive QuickBooks Database Server Manager service. As a result, multi-user mode cannot operate as intended. Restarting the QBCFMonitorService, making sure the service is configured to run automatically, or reinstalling QuickBooks Database Server Manager are the possible fixes. Call our QuickBooks Experts Team at 1.855.738.2784 to speak with someone as soon as possible.