Could not verify the web application server certificate

Are you getting the below error message when attempting to add our application to the Web Connector?


QBWC1048: QuickBooks Web Connector could not verify the web application server certificate. QBWC1051: The new application was not added


This means that QuickBooks is unable to verify a valid SSL on your website. There are several additional causes/resolutions for this:

  • Ensure a fully valid SSL certificate is correctly installed on your site. SelfSigned certificates are not valid.
  • Ensure your local and remote firewall/security plugins are not blocking the QuickBooks connection to your site.
  • Ensure you don't have any privacy/redirection plugins enabled on your site that might be blocking the QuickBooks connection.
  • If none of the above issues seem to be the cause, it's likely that theTLS readiness tool by QuickBooks needs to be run. Close QuickBooks and the web connector, then download and run this tool. After restarting your computer, you should no longer see this issue.
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