Troubleshooting Guide for “QBCFMonitorService Not Running on This Computer” in QuickBooks

QuickBooks is an essential tool for many businesses, providing comprehensive accounting solutions that help manage finances with ease. However, like any software, it can encounter issues that disrupt its functionality. One such problem is the “QBCFMonitorService Not Running on This Computer” error. This error can be perplexing and frustrating, as it prevents users from accessing their company files. In this blog, we will delve into the causes, symptoms, and detailed solutions to resolve this error, ensuring your QuickBooks runs smoothly once again.

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Understanding QBCFMonitorService

The QuickBooks Company File Monitor (QBCFMonitorService) is a crucial component of QuickBooks. It plays a key role in managing the company files and ensuring that multi-user mode functions correctly. When this service fails to run, it can impede access to the company files, particularly in multi-user environments.

Symptoms of QBCFMonitorService Error

Identifying the symptoms of this error is the first step toward troubleshooting. Common signs include:

  • Inability to switch to multi-user mode.
  • Error message stating “QBCFMonitorService not running on this computer.”
  • Problems accessing company files located on a server.
  • QuickBooks running slowly or freezing.
  • Multi-user setup errors when attempting to open company files.

Causes of QBCFMonitorService Not Running Error

There are several potential causes for this error, including:

  1. Service not started: The QBCFMonitorService might not be running due to it being stopped or disabled.
  2. Damaged QuickBooks installation: Corrupted or incomplete installation of QuickBooks can cause this issue.
  3. Firewall and security settings: Overprotective firewall or security software can block the service from running.
  4. Windows operating system issues: Problems within the Windows OS, such as registry errors or missing system files, can also lead to this error.
  5. Multi-user mode issues: Incorrect configuration wimdows 11 or issues with the multi-user setup in QuickBooks.

How to Resolve QBCFMonitorService Not Running Error

Resolving this error involves several steps, ranging from simple checks to more advanced troubleshooting methods. Follow these steps in order to effectively fix the issue.

Step 1: Check QBCFMonitorService Status

The first step is to ensure that the QBCFMonitorService is running.

  1. Press Windows + R to open the Run dialog box.
  2. Type services.msc and press Enter.
  3. In the Services window, locate “QBCFMonitorService.”
  4. Check the status of the service. If it is not running, right-click on it and select “Start.”
  5. If the service is already running, right-click on it and select “Restart.”

Step 2: Configure Firewall and Security Settings

Firewalls and security software can block QuickBooks services. Ensure that these are configured to allow QBCFMonitorService to run.

  1. Open your firewall or security software settings.
  2. Add exceptions for the following QuickBooks services:
    • QBCFMonitorService.exe
    • QuickBooksDBXX.exe (XX represents your QuickBooks version)
    • QBW32.exe
  3. Ensure that these services are allowed both inbound and outbound communication through the firewall.

Step 3: Repair QuickBooks Installation

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A damaged QuickBooks installation can cause various issues, including the QBCFMonitorService error. Repairing the installation can fix these problems.

  1. Press Windows + R to open the Run dialog box.
  2. Type appwiz.cpl and press Enter to open the Programs and Features window.
  3. Locate QuickBooks in the list of installed programs.
  4. Select QuickBooks and click on “Uninstall/Change.”
  5. In the QuickBooks installation window, choose “Repair” and follow the on-screen instructions to complete the repair process.

Step 4: Update QuickBooks and Windows

Ensuring that both QuickBooks and your Windows operating system are up-to-date can resolve compatibility issues.

  1. Open QuickBooks and go to the “Help” menu.
  2. Select “Update QuickBooks Desktop.”
  3. Click on “Update Now” and then “Get Updates.”
  4. After the update is complete, restart QuickBooks.
  5. For Windows updates, press Windows + I to open the Settings menu.
  6. Go to “Update & Security” and click on “Check for updates.”
  7. Install any available updates and restart your computer.

Step 5: Verify and Rebuild Data

Corrupted data files can cause the QBCFMonitorService error. Verifying and rebuilding the data can help fix these issues.

  1. Open QuickBooks and go to the “File” menu.
  2. Select “Utilities” and then “Verify Data.”
  3. If QuickBooks detects any issues with your data, go back to the “File” menu.
  4. Select “Utilities” and then “Rebuild Data.”
  5. Follow the on-screen instructions to complete the rebuild process.

Step 6: Reconfigure Multi-User Mode

Issues with multi-user mode can trigger the QBCFMonitorService error. Reconfiguring multi-user mode can help resolve this.

  1. Open QuickBooks on the server.
  2. Go to the “File” menu and select “Utilities.”
  3. If you see “Host Multi-User Access,” click on it. If you see “Stop Hosting Multi-User Access,” do not click on it.
  4. Close and reopen QuickBooks.
  5. Ensure that other users are logged out of QuickBooks.
  6. Go back to the “File” menu, select “Switch to Multi-User Mode,” and follow the on-screen instructions.

Step 7: Use QuickBooks File Doctor

Intuit offers a tool called QuickBooks File Doctor, which can automatically diagnose and fix various QuickBooks issues, including the QBCFMonitorService error.

  1. Download QuickBooks Tool Hub from the official Intuit website.
  2. Open the downloaded file and follow the on-screen instructions to install it.
  3. Open QuickBooks Tool Hub and select “Company File Issues.”
  4. Click on “Run QuickBooks File Doctor.”
  5. Select your company file and click “Check your file.”
  6. Enter your QuickBooks admin password and click “Continue.”
  7. Follow the on-screen instructions to complete the repair process.

Preventing QBCFMonitorService Errors

Prevention is always better than cure. Here are some tips to prevent QBCFMonitorService errors in the future:

  1. Regular Updates: Keep QuickBooks and your operating system up-to-date to avoid compatibility issues.
  2. Backup Data: Regularly back up your QuickBooks data to prevent data loss in case of errors.
  3. Firewall Configuration: Ensure that your firewall and security software are properly configured to allow QuickBooks services.
  4. System Maintenance: Perform regular system maintenance, such as disk cleanups and defragmentation, to keep your system running smoothly.
  5. Check for Malware: Regularly scan your system for malware that could interfere with QuickBooks services.


The “QBCFMonitorService Not Running on This Computer” error can be a significant hindrance, disrupting your ability to access and manage your QuickBooks company files. However, by following the comprehensive troubleshooting steps outlined in this guide, you can resolve the issue effectively and ensure the smooth operation of your QuickBooks software.

By understanding the causes and symptoms of the error, and implementing preventive measures, you can minimize the likelihood of encountering this problem in the future. If the error persists despite following these steps, it may be beneficial to contact QuickBooks customer support for further assistance.

With the right approach and tools, you can overcome QuickBooks errors and maintain the efficiency and reliability of your accounting operations, allowing you to focus on growing your business without the interruption of technical issues.

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