This guide is provided by Conductor, the service that powers the QuickBooks Desktop integration for many business tools, including the one that sent you here.
The QuickBooks Web Connector is a vital component that comes pre-installed with QuickBooks Desktop. Conductor uses this tool to securely sync your data. To use Conductor, you must have at least version 2.3.0.20 of the QuickBooks Web Connector installed. In our experience, fewer than 1% of users have an older version. If you’re using an outdated version, you might see an error message like this: Error message indicating an outdated QuickBooks Web Connector version Follow these steps to upgrade the QuickBooks Web Connector to the latest version:
1

Close QuickBooks Desktop

Ensure that QuickBooks Desktop is completely closed before proceeding.
2

Terminate the QuickBooks Web Connector

Close the QuickBooks Web Connector process to ensure it’s not running in the background:
  1. Open the Windows Task Manager by pressing Ctrl + Shift + Esc or by searching for “Task Manager” in the Windows search bar.
  2. In the Task Manager, locate “QuickBooks Web Connector”. Right-click it and select “End Task”. If you don’t see it, click “More details” at the bottom of the Task Manager window to view all running processes.
  3. Close the Task Manager.
3

Delete the current QuickBooks Web Connector installation

To upgrade, you must first delete the current installation:
  1. Open File Explorer and navigate to C:\Program Files (x86)\Common Files\Intuit\QuickBooks.
  2. Delete the folder named QBWebConnector and, if present, the folder named QBWebConnector3.0.
4

Download the latest QuickBooks Web Connector

Visit Intuit’s official download page to get the latest version of the QuickBooks Web Connector. Always download the most recent version, even if you’re using an older version of QuickBooks Desktop.QuickBooks Web Connector download page on Intuit's website
5

Install the QuickBooks Web Connector

Once the download is complete, open the downloaded file and follow the installation wizard’s instructions.
6

Relaunch the QuickBooks Web Connector

  1. Open QuickBooks Desktop.
  2. In the top menu bar, click “File” → “App Management” → “Update Web Services” to launch the QuickBooks Web Connector.
  3. In the window that appears, click “Hide” in the bottom-right corner to keep the Web Connector running in the background.
You have now successfully upgraded to the latest version of the QuickBooks Web Connector and can proceed with setting up your connection to Conductor.