Download QuickBooks Connection Diagnostics Tool

Download Quickbooks Connection Diagnostic Tool – Installation & Usage

QuickBooks is a well-known accounting program that is an alternative for startups and medium-sized firms that do not have a large workforce or a robust finance department. It saves time and resources but still increases productivity. One such tool is the QuickBooks Connection Diagnostic Tool. The Connection Diagnostic Tool can assist in the resolution of a wide range of errors in QuickBooks Pro, Payroll, and Premier including data files, data recovery, download, repair, and upgrade.

Anyway, if you’re looking for a comprehensive guide on how to download, install, and use QuickBooks Connection Diagnostic Tool, you’ve come to the right place. In this article, we will go over all the minor and major details about QuickBooks Connection Diagnostic Tool.

What is QuickBooks Connection Diagnostic Tool?

QuickBooks Connection Diagnostic Tool Interface

QuickBooks connection diagnostic tool is used to fix multi-user and network connectivity errors while you are accessing company files. It is designed to resolve 6000 series errors. With the help of this tool, you can develop suitable and adequate connections with other applications like QBs database manager and company records.

System Requirements of QuickBooks Connection Diagnostic Tool

So, we have mentioned below where you can use this tool:

Setting Icon

  • You can use QuickBooks diagnostic connection tool in MS Windows 7, XP, and Windows Vista.
  • It works with QBs 2008 version and is also compatible with the new version.

What Problems and Errors Will the QuickBooks Connection Diagnostic Tool Fix?

You will use this awesome method to solve a wide range of problems and mistakes. So, let’s take them one at a time and find out what they are.


QuickBooks Error 6000 QuickBooks Error 6000 77 Error Code 6189 QB Error code 6000 80
QuickBooks error 6123 QuickBooks Error 6129 QuickBooks Error 6144 82 QuickBooks Error 15215
QuickBooks Error 6175 QuickBooks Error 6177 QuickBooks Error 12007 QuickBooks Error 6150 
QuickBooks Error H202 QuickBooks Error H505 QuickBooks Error 6000 83 QuickBooks Error 6210


  • Not able to connect QuickBooks.
  • There is a problem with the Firewall port.
  • Damaged QuickBooks company file.
  • Your company files are missing.
  • During certain cases, the vendor list in QuickBooks is empty.

Important Points to Consider Before Using Quickbooks Connection Diagnostic Tool

Before using the QuickBooks Connection Diagnostic Tool, consider the following important points:

  • Download from the official Intuit website or a trusted source.
  • Check compatibility with your QuickBooks version.
  • Run the tool with administrator privileges.
  • Close QuickBooks before running the tool.
  • Back up QuickBooks company file before using the tool.

When Do You Make Use of the Tool?

You should use this method if you notice any of these symptoms or problems. Let’s take a look at what they are.

  1. This tool can help you to fix issues with QuickBooks Database access.
  2. If your employee’s list entries are missing.
  3. By using the QuickBooks connection diagnostic tool you can solve issues that are caused by damaged or corrupted files.
  4. When the dealer and buyer lists are all empty.
  5. Your PC is causing a disturbance due to some malware and virus attacks.

How Do I Download & Install the QuickBooks Connection Diagnostic Tool?

Here is what you need to do for the QuickBooks connection Diagnostic Tool download. Simply take each action one at a time.

installing QuickBooks connection diagnostic tool

  • Go to the official website of Intuit to download the QBs Connection Diagnostic Tool.
  • Then wait for a few minutes then a .exe file you will see once the download finishes.
  • Accept the terms and conditions by clicking the “I agree” button. 
  • Later, press the Next button.
  • To finish the installation, simply obey the on-screen directions.

How Does the QuickBooks Diagnostic Connection Tool Work?

By becoming familiar with the various tabs, you can quickly troubleshoot any fault relating to connectivity, firewall, or connection problems.

  • Firewall Status Tab: The firewall status tab helps in diagnosing problems within the firewall as issues related to it can stop your work and also disable some important programs.
  • Diagnose Connection tab: It enables the users to access company files no matter if it is in single-user or multi-user mode. You will see the error again and again if you haven’t set the permissions properly.
  • Connectivity Test: This tool enables you to check connectivity between networks. While working you may see that your network fluctuates so to get out of it we have this tab. Here’s how to make use of this tab.
  • Firstly, locate the QBs file and only use the Linux system.
  • Then select Modify Hosting Server and you will get a message Not Applicable to every status.
  • Now, if you start the test it will show green color.
  • Click on Test Connectivity. And if the Red color appears then the test is not successful.
  • Go to the Advanced option and tap on what these mean.
  • After that run the QuickBooks connection diagnostic tool and wait till the process finishes.

If you are experiencing the issues that we have mentioned then you should use the Quickbooks connection diagnostic tool. By looking at the procedure:

  • Go to QuickBooks and ensure that you should not use the file that is damaged.
  • Click on Utilities and tap on Repair.
  • Then choose Network Problems and press Yes after receiving a message.
  • After this move toward the folder where you have saved your QB file.
  • Select Show Advanced Setting and you will get a list.
  • Simply press on the issues and give your password and login ID.
  • Lastly, click on QuickBooks Connection Diagnostic Tool.
Also Read: How to Download and Install the Quickbooks Install Diagnostic Tool?


All in all, QuickBooks Connection Diagnostic Tool is a valuable resource for diagnosing and resolving network connection issues in QuickBooks. By following the necessary precautions, such as downloading from a trusted source, checking compatibility, running with administrator privileges, closing QuickBooks, and backing up the company file, you can effectively utilize this tool to troubleshoot and enhance network connectivity, ensuring smoother operations and improved functionality within QuickBooks. We hope we are able to enlighten you on how to find, install, and use this fantastic Intuit resolution tool. Don’t hesitate to read the rest of our posts on our website for any other related queries.

Frequently Asked Questions (FAQs)

Q1. How do I fix error 6123 in QuickBooks?

Q2. How to start QuickBooks in multi-user mode?

  • Tap on the File option and choose Open or Restore Company.
  • Select Open a company file and press Next.
  • From the Open a company window look for Open file in multi-user mode.

Q3. How do I fix network connection failure in QuickBooks?

Here is how you can fix network connection failure in QuickBooks.

  • Check network cables and connections for any physical damage or loose connections.
  • Restart the router, modem, and all network devices.
  • Disable any firewall or antivirus software temporarily to check if they are blocking the network connection.
  • Verify that QuickBooks is allowed through the Windows Firewall or any other third-party firewall.
  • Reset the network settings in QuickBooks by going to the File menu, selecting Utilities, and choosing “Host Multi-User Access” or “Stop Hosting Multi-User Access” depending on the current setting.

Q4. How to use the QuickBooks Connection Diagnostic Tool?

Here is how you can use QuickBooks connection diagnostic tool.

  • Download and install the QuickBooks Connection Diagnostic Tool from the Intuit website.
  • Launch the tool and select the QuickBooks version you are using.
  • Enter the IP address or hostname of the computer with the company file, and select the test connection option.
  • Now click “Test Connectivity” to diagnose and troubleshoot network issues in QuickBooks.