Error: The QuickBooks user has denied access

Error message: Unable to open the QuickBooks company file.  << The QuickBooks user has denied access>>

Cause:  Axis has not been granted or has been denied permission to connect to the QuickBooks company file.

Resolution: In QuickBooks modify or remove and reset the Zed Axis integrated application permissions so that Axis has the sufficient permissions to connect to the company file.  Follow these steps to 

1. Login to your QuickBooks file as an Administrator in single user mode.
2. Go to the integrated application list in the company preferences. From the menu select Edit > Preferences and then select the Integrated Applications icon and Company Preferences tab.
3. In the list the application called Zed Axis may be listed, if so then we recommend that you Remove it by first selecting it in the list and then clicking the Remove button.
4. Now we are going to re establish a connection to QuickBooks, follow the steps in this article.