Quick way to overcome from QBDBMgrN not running on this computer error

QBDBMgrN not running on this computer points to an error where the database server manager has stopped working and the windows security firewall might interrupting it from communicating with the internet. Due to this error it hindrance in working in multi-user mode. To solve this error try to fix and update the windows firewall, and restart the QBDBMgrN server manager service.