I can not connect Web connector( with QB Desktop 2018 Pro(v28.0.4006.0). "Can't open QuickBooks" window coming out. How can I fix this?

Our customers take their invoices from our service to their Quickbooks Desktop by using Web Connector.
In one of our customers' computer, I couldn't connect Web Connector to QB Desktop by using QWC file.
The version of Quickbooks Desktop Pro is v28.0.4006.0 and Web Connector version is

How can I fix this?
Is there a way by changing something in windows registry or changing some file?
Please help!


Hi there, dev

There may be several reasons due to which you may not be able to open your QuickBooks Desktop. It may be possible that you are not using the latest version of QuickBooks. However, more troubling problems such as data corruption may be the cause.

This article will discuss what its reasons are and how to fix it: https://community.intuit.com/articles/1502071.

You can also check this article for troubleshooting errors when running QuickBooks Web connector: https://community.intuit.com/articles/1558151

If none of this will work, I’d suggest reaching out to our technical support team for further investigation.

Here’s how:

Go to this link: https://help.quickbooks.intuit.com/en_US/contact

  1. Choose QuickBooks Desktop.
  2. Select Pro or Premier.
  3. Select any main topics and sub topics.
  4. Scroll down, and click the Get Phone Number button.

I'll be here anytime you need assistance while working in QuickBooks.

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IntuitMarkD , Community Support Specialist
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