Fix QBCFMonitorService Not Running Error in QuickBooks

QBCFMonitorService is a background Windows service that lets QuickBooks Desktop host and manage company files across a network in multi-user mode. When it stops running, other computers on the network lose access to the shared company file, and users often see errors like “QuickBooks could not start multi-user hosting” or “Error H202/H303.” The most common causes are a corrupted QBCFMonitorService.exe file, incorrect Windows service configuration, firewall blocking, or outdated QuickBooks Database Server Manager software.

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Reasons Behind the QBCFMonitorService Startup Issue

Finding the exact reason that triggers the QBCFMonitorService not running issue is equally important as finding the right solutions. Considering this, we have come up with some of the root causes that might be responsible for the appearance of the error.

QBCFMonitorService not starting or crashing in QuickBooks

QBCFMonitorService.exe file corruption caused by malware, a virus, or an incomplete QuickBooks update
Windows Registry errors related to QuickBooks services
The server hosting the company file not configured correctly for multi-user access
Windows Defender or a third-party firewall blocking the QBDBMgrN.exe or QBCFMonitorService.exe processes
Weak or unstable internet/network connection between workstations and the server
Running an outdated version of QuickBooks Desktop or QuickBooks Database Server Manager
Windows updates that reset service startup type from Automatic back to Manual

How to Identify the QBCFMonitorService Crashing Issue

The following are the indications that will help the users to identify QBCFMonitorService keeps crashing issue occurring on your computer.

Other computers can’t access the company file in multi-user mode
Company file backups fail or hang partway through
QuickBooks freezes, lags, or crashes when opening the file
Error codes H101, H202, H303, or H505 appear on workstations.
The QuickBooks Database Server Manager shows the file as “not scanned” or missing

Quick and Simple Tricks to Rectify QBCFMonitorService Not Running Issue

After having a thorough understanding of the QBCFMOnitorService not working issue, you must look at the troubleshooting methods to fix the issue.

Get Ready To Download & Install the Updated Version of QuickBooks

To get the updated version of QuickBooks Desktop installed, you must carry on with the stepwise instructions outlined below:

Start the process by opening QuickBooks Desktop and then clicking on the Help menu.
Afterwards, you must pick the QuickBooks menu bar and hit Update QuickBooks Desktop.
As a result, it will take you to the Update QuickBooks window, and then choose the Update Now tab.
Now, you are supposed to get the latest QuickBooks updates and wait for some time to get it installed.
Once you have finished installing the QuickBooks Desktop updates, all you require is to shut down the QuickBooks application. Herein, the users must verify that the updates have successfully installed.
Finally, if you verify that the updates are applied, then verify that the updated version of QuickBooks is installed.

2. Relaunch The QBCFMonitorService On Your Computer

Sometimes, users can also overcome the QBCFMonitorService not running on this computer by relaunching the QBCFMonitorService. Doing so will remove the technical issues that might appear while running the service appropriately. So, to restart the service, you must go ahead with the process described below:

In the first place, the users must press the Ctrl + Del + Alt keys together to bring up the Task Manager on your system.
After this, when you reach the Task Manager Window, move to the Processes tab to proceed ahead.
Thereafter, you are supposed to right-click on the QBCFMonitorService process and then go ahead with the End Task tab.
When you are done making the required changes, tap on the Yes tab for confirmation.
At last, launch QuickBooks Desktop again and then check if the QBCFMonitorService not working issue.

3. Start Setting Up the QuickBooks Database Server Manager

For setting up of the QuickBooks Database Server Manager, you must implement the stepwise instructions outlined below:

In the initial stage, hit the Windows + R keys and include “services.msc” in the search console to move forward.
After this, when you reach the Services window, start looking for the QuickBooks DBXX service from the list of options available so that we can modify the properties.
If you discover that the service status is reflected as Stopped, right-click on the service and opt for the Properties tab.
Now, move to the General tab and beneath it you must verify that the Startup Type is set to Automatic from Manual.
Afterwards, proceed to the Log On tab and choose the highlighted Local System Account from This Account.
Proceeding ahead, browse to the Recovery tab and then from the drop-down menu list, opt for the First Failure, Second Failure, and Subsequent Failure. When you are done making the necessary changes, opt for the Restart the Service option.
When you are done making the required changes, hit the Apply tab and then the OK to bring the changes into action.

4. Make the Required Changes With Windows & Third-Party Firewall

Below, we have stated the proper stepwise instructions to make changes to the Windows Firewall and third-party firewall to resolve the QBCFMonitorService not working issue.

In the beginning, you must access the server computer and launch the Command Prompt window by including “CMD” into the search console of the Start menu.
After that, enter the command “ipconfig” and hit the Enter key. By doing so, you will notice that the IP address of the server will be on your computer screen.
Soon after this, insert PING (Server’s IP Address) and then press the Enter key to test the connectivity.
Once you are done running the above command, you may discover that your workstation will send you data packets to your server to verify the network connectivity.
Furthermore, when you notice that the server receives all four packets, it will instantly send the status back to you.
Conclude the entire process and verify if the status shows you a packet loss. If it does, then it reflects that there is some issues regarding the network connection that need immediate fixing.

Conclusion

That covers the most common causes and fixes for the QBCFMonitorService not running issue. Most cases resolve with a service restart, a firewall exception, or setting the startup type to Automatic. If the issue persists after trying these steps, running QuickBooks Tool Hub’s Network Issues diagnostic is the fastest next step before reaching out to a QuickBooks support specialist.

Frequently Asked Questions

Why is QBCFMonitorService not running on my computer?

It’s usually because the QuickBooks Database Server Manager service has stopped, is set to Manual instead of Automatic startup, or the QBCFMonitorService.exe file has become corrupted.

How do I fix “QBCFMonitorService Not Running”?

Restart the service through Windows Services (services.msc), set its startup type to Automatic, then restart your computer and relaunch QuickBooks in multi-user mode.

Can antivirus or firewall software cause QBCFMonitorService issues?

Yes. Windows Defender or third-party antivirus/firewall programs sometimes block QBCFMonitorService.exe or QBDBMgrN.exe from communicating across the network, which stops multi-user hosting from working.

Does QBCFMonitorService need to run on every computer or just the server?

It only needs to run on the computer hosting the company file (the server). Workstations connect to that host over the network and don’t need the service running locally.

What’s the difference between QBCFMonitorService and QuickBooks Database Server Manager?

QuickBooks Database Server Manager is the tool that manages and scans company file folders for network access. QBCFMonitorService is the background Windows service that keeps that hosting connection active.

Will reinstalling QuickBooks fix a persistent QBCFMonitorService error?

Sometimes. If the .exe file itself is corrupted and firewall/service fixes don’t work, a clean reinstall using the QuickBooks Clean Install Tool often resolves it.

About The Author

Jonathan Browns

Jonathan Brown is a trained QuickBooks professional with 10 years of experience in the accounting sector. Moreover, he is passionate about helping businesses reduce the stress of managing accounts. Also, he is proficient in assisting entrepreneurs and small business owners to use QuickBooks and enhance their accounting experience.