The message QuickBooks Database Server Manager stopped means that the service that controls multiple users' access to QuickBooks company files has ceased. A faulty installation, an out-of-date server manager, or a poorly configured firewall could be the cause of this problem. Usually, the issue is fixed and multi-user functionality is restored by restarting the service, updating QuickBooks, or adjusting firewall settings. Call the QB support team at 1.855.738.2784 if you need assistance.