I'm here to share additional information on how to configure your firewall, @TheLenz

You can set those settings from your security software. It'll be best to ask an IT specialist how to set those internet ports, enable applications, and domains to resolve the error you're having.

To set your Windows firewall and security settings for QuickBooks Desktop, follow the steps outlined in the following article: Set up firewall and security settings for QuickBooks Desktop. It'll guide you on how to run QuickBooks File Doctor and configure the firewall manually.

If you're still having an error when processing payments, I suggest reaching out to our Customer Support team. They can check the account you're having and help you resolve it. You can check this article for more information about the different types of support we offer and their availability: Contact QuickBooks Desktop support.

Let me know if you need further help to resolve the issue you're having with your company file when processing payments. I'm always here to assist. Have a wonderful day!