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What is QBDBMgrN not running on this computer error and how to debug it?


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A user can face QBDBMgrN not running on this computer error while turning on the multi-user mode in QuickBooks Desktop. Usually, it takes place when the Firewall on the server computer blocks QuickBooks Desktop from connecting to the internet. Below, we have explained the steps that you can follow to rectify this error:

1. On your keyboard, press the Windows icon key to select the Start menu.
2. Choose the All Programs option.
3. From the list of options, select Windows Firewall.
4. Choose Advanced Settings from the left-side pane.
5. Right-click Inbound Rules and then choose the New Rule option.
6. Select the Port option and then choose the Next option.
7. Ensure the TCP option is selected.
8. In the Specific local ports column, type the particular ports required for your QuickBooks year version.
9. Choose the Next button.
10. Click on the Allow the Connection option and then choose the Next button.
11. If prompted, make certain all profiles are check-marked. Select the Next button.
12. Create a new rule and give it a title like “QBPorts(year).”
13. Choose the Finish button.
14. Follow the above same steps to create outbound rules now.


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  • 5 months later...

QuickBooks is a software that helps people manage their personal as well as company budgets and finances. People running the software for personal use can operate on its single-user mode. However, huge businesses turn to the multi-user mode of QuickBooks. If you are one of the users of the software, you must be very well aware of QBDBMgrN, also known as QuickBooks Database Server Manager.


This tool is the backbone of the multi-user mode and is majorly used to organize and put the database of your company file together. Without this software, it is not possible for a user to operate in the multi-user mode is not possible. If your screen is also displaying the message, QBDBMgrN Not Running Issue, then you are definitely at the right place.


Let us take you through the initial reasons behind this error as well as how you can fix it.

What Triggers QBDBMgrN Not Running Issue?

There can be a lot of reasons why QuickBooks Database Server Manager might break down. Here are a few that might sound familiar to you:

  • One of the basic triggers could be a restriction from your anti-virus.

  • Also, if you do have a missing or corrupted installation of the QBDBMgrN tool

  • In addition to that, the problem might also arise because of an issue in the network file.

  • If you are using an outdated version of the Database Server, that can also make it shut down.

  • Interruption from a third-party application can be one of the causes.

Troubleshooting Steps for QBDBMgrN Not Running On This Computer Error

Since the QuickBooks multi-user mode is of no use without QBDBMgrN running in the background, you can try your hands on the following solutions to overcome the complication.

Fix 1: Update Windows Firewall to its Latest Version

If your desktop has a firewall that is not up to date, the first thing you should do is get its latest version.

  • The first step here involves running the Control panel on your system. This can be done by pressing the Ctrl+R key on the keyboard or opening it from the Start menu.

  • Thereafter, type in “control firewall.cpl” and hit the OK button underneath it.

  • Now, once you are on the Windows Firewall tab, you need to locate the Update your Firewall Settings button.

  • Furthermore, select the Check for Updates to see if there is any newer version available.

  • If you do find one, go ahead and download it.

This might resolve the QBDBMgrN not working trouble.

Fix 2: Restart the QBDBMgrN Tool

Stopping this Intuit product from the background and then restarting it might fix any network issue, eventually letting you work on the multi-user mode.

  • Firstly, you need to head to the Control Panel on your PC.

  • Hit the Ctrl and the R key, or simply go to the start menu in order to do so.

  • Thereafter, in the space beside the Open option, type services.msc and tap on the Enter key.

  • After the window is up and running, locate QuickBooksDBXX (XX being the software version).

  • Once you find it, right-click on the service and click on the “Restart the service” option.

Remember to restart the system after this step to overcome the problem.

Fix 3: Edit the Present QuickBooks Desktop Version

If neither of the above fixes works for you, try repairing the software version you are working on.

  • Initially, go to the Start menu on your laptop and look for the Control Panel.

  • Use this prompt window to open appwiz.cpl by putting the same in the search bar.

  • After that, select Program from the list of options and eventually click on Uninstall/Change.

  • In the following window, you have to locate the QuickBooks Desktop file and choose the same.

  • Thereafter, a pop-up window will appear before you with the option of Repair and Remove.

  • Mark Repair and hit the Next button from the bottom right.

  • Move ahead by following the commands on your screen and let the repair process get over.

Restart QuickBooks to check if the problem has vanished.

Fix 4: Install QuickBooks Software Again

If repairing the installation doesn’t work for you, then reinstall it.

  • In order to do so, you again need to go to the Programs window present within the Control Panel.

  • Now, this time when you move to the Uninstall/Change tab, instead of Repair, mark Remove.

  • Go ahead and follow the on-screen instructions to eliminate the current QuickBooks version.

  • Furthermore, in order to install the new version, open Intuit’s official website, choose your country, and start the downloading process.

  • Lastly, go to the Downloads folder in your system and install QuickBooks Desktop by going along with the instructions.

Remember that you need to agree to the Terms and Conditions to run the software.

Fix 5: Run QuickBooks File Doctor

Unlike the old times, you no longer need to download QuickBooks File Doctor separately. Intuit has come up with its Tool Hub, where you can get almost everything that you need.

  • Run your browser and go to the official website of Intuit. This is where you can download QuickBooks Tool Hub from.

  • After the downloading is done, install and run the software in your system.

  • Now, you will find a list of options on the left side of the homepage.

  • Select the Company File Issues tab and hit QuickBooks File Doctor.

  • This tool will automatically detect and fix any network issue and file damage in the QuickBooks file.

Run QuickBooks to see if you are able to resume your task.

Fix 6: Verify User Hosting Settings

If nothing has worked for you up until now, there is a possibility that there is an error in the hosting settings on the user system.

  • In order to repair the hosting settings, you first need to log into your QuickBooks account.

  • After that, go to File from the menu bar of the homepage.

  • Now, from the options displayed on your screen, hit Utilities and let the drop-down list open.

  • This is where you need to know if the setting is wrong.

  • You might see here either of the two options: Stop Hosting Multi-User Access or Host Multi-User Access.

  • If your list holds the Host multi-user option, then you have to leave it untouched.

  • However, in the vice versa case, click on Stop Hosting Multi-User Access and then try to work on your system.

Change this setting in every user system.


People working on QuickBooks multi-user mode often encounter QBDBMgrN Not Running Issue message while working. This is why this post included various fixes that you can put into action to remove the hindrance.

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