QBDBMgrN not running on this computer error occurs when the QBDBMgrN failed to start and the user unable to access the company file in multi-user mode. This can be caused by many problems such as the improper installation of QBDBSM, or the windows firewall is blocking the connection between them. To solve this error follow the given steps and update the windows firewall:

1. Open Control Panel
2. Open windows firewall and check for updates
3. Check if there is any update available, if yes then click Update Now
4. Restart the PC after updating the windows firewall

We hope that the given solution works for you, but in case everything looks confusing to you. It is highly recommended to get a knowledgeable technician. Our technical support team will love to help you dial 844-888-4666 for instant resolution.