How to Fix QBDBMGRN Not Running on this Computer?
If you are a QuickBooks user, whether you have been using it for decades or you are just getting started, you have probably heard of QuickBooks database server management. You may have also used this incredible tool in some capacity. Many users have recently reported the database server manager not running on the computer issue. This issue may result in many restrictions for you, such as preventing access to multi-user mode. The error message "QBDBMgrN not running on this computer" implies that the database server manager has ceased working and that the security firewall is interfering with QuickBooks' ability to connect to and communicate with internet servers.

A simple solution to the QBDBMGRN Not Running on this Computer Server Error (A QuickBooks Database Error).
QBDBMgrN is a process in the QuickBooks Database Server Manager. QuickBooks Database Server Manager is a QuickBooks software that allows many users to access a company file that is kept on a server or host computer. QBDBMgrN is in charge of monitoring the QuickBooks company files kept on the host machine and granting other users network access to them.
The "N" in QBDBMgrN stands for "network," indicating that it is intended to manage QuickBooks databases shared across a network. QBDBMgrN runs as a Windows service in the background, which means it begins automatically when the computer is turned on.
Related error - QuickBooks Error 6154
Why does the user receive an error message stating that QBDBMgrN is not running?
This PC does not have QBDBMgrN running. This problem commonly occurs when you update QuickBooks desktop to the most recent update without also updating the Windows firewall. An outdated firewall may see the QuickBooks database server management error as an unknown service and therefore block it to guard against malware. This eventually results in a failure to connect to the internet and an error message while attempting to resolve the issue with the QuickBooks file doctor. A few other
things that could be causing such an irritating error are listed below:
Improper firewall or internet configuration is causing issues. This issue can also occur if a third-party firewall software is restricting access to QuickBooks.
Incorrect or infected QuickBooks database server management installation.
This error could occur if there is a problem with the network file. One of the explanations could be out-of-date database server management.
Related error - QuickBooks Error h202