QBWC1048: QuickBooks Web Connector could not verify the web application server certificate

Resolutions:

1. Re-download the QBWC File and Re-add the Application:

   • There may have been an issue with the original file or the initial connection setup. Try downloading the QBWC file again from the relevant source and re-adding the application within the Web Connector.

2. Verify and Allow Communication Through Your Firewall/Antivirus:

   • Ensure that the Intuit Web Connector is allowed to communicate with the following service hosts:
     • dashboard.payportal.com
     • Intuit.com
   • To do this:
     • Check your firewall and antivirus settings to confirm they aren't blocking the Web Connector's traffic.
     • If you're using a corporate or private firewall, ensure these URLs are whitelisted.
     • Make sure that the necessary ports for outbound communication are open (usually ports 443 for HTTPS communication).
     • You might need to temporarily disable the firewall or antivirus software to test if they are the cause of the issue.

Additional Considerations:

• Proxy Servers: If you're using a proxy server, verify that it's correctly configured to allow traffic from the Web Connector to reach Intuit's services.
• Network Configuration: If your network has specific routing or DNS restrictions, you may need to modify those settings to ensure proper communication with external services.

Once these steps are followed, attempt to re-add the application in the Web Connector again. If the problem persists, consider reviewing the Web Connector logs for more detailed error messages that could point to specific issues.