The error "Qbdbmgrn Not Running" denotes a malfunction in which the computer's QuickBooks Database Server Manager (Qbdbmgrn) service is not operating. In order to host company files and allow multi-user access in QuickBooks Desktop, this service is essential. Users must start the Qbdbmgrn service and make sure multi-user mode is properly configured in order to fix this. Give our QuickBooks Experts Team a call at 1.855.738.2784 for immediate assistance.