Download And Use QuickBooks Connection Diagnostic Tool

The QuickBooks Connection Diagnostic Tool is an effective software program. It helps users troubleshoot various types of errors and issues that occur when using QuickBooks accounting software products and resolve them quickly. For instance, if you encounter an error when opening your QuickBooks company file in a multi-user environment, the QuickBooks Connection Diagnostic Tool comes in very handy and lets you easily fix connection error and multi-user errors that can occur when accessing your company file in QuickBooks.

Intuit developed the QuickBooks Connection Diagnostic Tool with a user-friendly interface that can be used even by non-tech-savvy QuickBooks users. If you own or manage your small or mid-sized business and use QuickBooks for all your financial accounting, tax, employee payroll, preparing an invoice for vendors/suppliers and customers, etc., and if you encounter certain network connection issues with your QuickBooks company file, then the QuickBooks Connection Diagnostic Tool will be of great help to you.

Compatibility And Requirements For Using QuickBooks Connection Diagnostic Tool

In order to use the QuickBooks Connection Diagnostic Tool, it is important that you consider the program’s compatibility as well as software requirements. QuickBooks Connection Diagnostic Tool provides appropriate compatibility with QuickBooks accounting software, QuickBooks Database Manager and QuickBooks company records.

The QuickBooks Connection Diagnostic Tool, however, only works with computers that run on Windows XP, Vista or 7 operating systems and that has QuickBooks 2008 and later or QuickBooks Enterprise Solutions 8.0 and newer versions.

Note: QuickBooks Connection Diagnostic Tool was built by Intuit to fix connection errors and issues in QuickBooks. However, the software program has now become obsolete and is succeeded by another advanced tool called QuickBooks File Doctor, which provides more features and supports all newer versions and editions of the QuickBooks support accounting software product. Also, you can run this tool on Windows 7, 8, 8.1 and 10 editions of the operating system.

You can download QuickBooks File Doctor from Intuit’s server. Or, click [here] to go directly to the official website to download the program.

Download And Install QuickBooks Connection Diagnostic Tool

You can download and run the QuickBooks Connection Diagnostic Tool to fix error messages that you receive when you install QuickBooks Desktop. The tool provides similar functionality as that of Microsoft Office tools.

Steps To Download QuickBooks Connection Diagnostic Tool

The following steps will guide you through downloading, installing and running QuickBooks Connection Diagnostic Tool on your computer.

  1. Download QuickBooks Connection Diagnostic Tool from Intuit’s server. Click [here] to download now.
  2. When prompted, save the QBNetDiagTool.exe file.
  3. Once downloaded, run the QBNetDiagTool.exe program to begin the installation process. Follow the on-screen instructions to complete the setup.
  4. After the installation is complete, open the program to start using it.

You can fix problems in QuickBooks using the QuickBooks Connection Diagnostic Tool with the help of the program’s automated scanning feature.

How It Works

QuickBooks Connection Diagnostic Tool automatically scans for problems and can resolve issues, such as:

  • Unable to connect QuickBooks to the database
  • QuickBooks database connection issues
  • Firewall ports for QuickBooks
  • Internet connectivity problems in the host computer
  • Microsoft .NET Framework component
  • C++ component
  • MSXML component

Resolve Problems Using QuickBooks Connection Diagnostic Tool

QuickBooks Connection Diagnostic Tool can perform necessary tests on your computer in order to ensure that QuickBooks company file is accessible from this computer, whether it is set up to be used in a single or multi-user environment. If permissions are not set correctly, or if the Firewall or the required network ports are blocked, then errors can occur and prevent QuickBooks from working properly.

When you launch the QuickBooks Connection Diagnostic Tool on your computer, the program provides two tabs, namely:

  • Diagnose Connection
  • View Log

Let’s take a look further as to how the features of QuickBooks Connection Diagnostic Tool help fix problems in QuickBooks.

Diagnose Connection

The Diagnose Connection tab in the QuickBooks Connection Diagnostic Tool displays the following:

  • Product Information
  • Firewall Status
  • Test Connectivity

Product Information

It displays information such as the version of your QuickBooks software product, hosting environment (single or multi-user) and TCP/IP protocol connections.

Firewall Status

QuickBooks Connection Diagnostic Tool displays the Firewall installed on your computer. It also lets you open ports to access QuickBooks applications, if blocked by the Firewall.

Test Connectivity

It allows you to check the connectivity for accessing company files in QuickBooks, change the hosting server, and ping your computer on the network. You will also find the Advanced link below that provides additional functionality that helps you scan and fix various errors.

The status in the QuickBooks Connection Diagnostic Tool uses different colors that indicate whether there are any problems or not.

  • Blue color indicates not applicable
  • Green color indicates no problems
  • Red color indicates errors and problems


In this article, we are going to show how you can use QuickBooks Connection Diagnostic Tool to resolve the connection and various minor issues that occur when using QuickBooks, such as experiencing connection problems when opening company files (.QBW and . TLG extensions).

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