I appreciate you providing details and attempting to re-authenticate your Capital One connection, Ian.
It appears you have posted a similar query twice. My colleague has already responded to your concerns and recommended reaching out to our live experts to further check why you're still encountering Error 571.
You can view her response through this link: https://quickbooks.intuit.com/learn-support/en-uk/banking/i-am-attempting-to-re-authenticate-my-capi...
If you have follow-up questions or need further assistance, please know we're here to help.
