Restart the QuickBooks Database Server Manager service and make sure that it is set to start automatically to resolve the "qbdbmgrn not running on this computer server" error. The QuickBooks Database Server Manager may need to be reinstalled, so check network connectivity, firewall settings, and other issues as necessary.

To fix the "qbdbmgrn not running on this computer Server" error, you can try the following steps:

1. The QuickBooks Database Server Manager service should be restarted. Locate the QBDBMgrN service in the Services window (enter "Services.msc" into the Start menu), then restart it.
2. Make that the service is configured to launch automatically. Set the Startup type to Automatic by selecting the QBDBMgrN service from the context menu and selecting Properties.
3. Check firewall settings and network connectivity. Ensure that the server machine has a solid network connection and that the firewall is not blocking the QuickBooks-specific ports.
4. The QuickBooks Database Server Manager should be reinstalled. Reinstall it utilizing the QuickBooks installation files after removing it from the Control Panel.

If the issue persists, consider seeking assistance from QuickBooks support or consulting with a qualified IT professional for further troubleshooting. just dial us at +1(855)-738-0359.