Multi-user access is prevented when the QuickBooks Database Server Manager service malfunctions, resulting in the QBDBMGrN not running on this computer error. Usually, firewall constraints or incorrect service configuration cause this problem. Restarting the service, upgrading QuickBooks, and setting up the firewall to run smoothly are the steps involved in fixing it. Our QuickBooks Experts team's number is 1.855.738.2784.