Hello there. I'll point you in the right direction to get this sorted out as soon as possible.
Know that this isn't the experience we'd want you to have. I'd recommend reaching out to our Customer Care Team. They have the tools to access your account in a secured environment and conduct further investigation to determine the reason you're getting the prompt even if you didn't connect Capital One Bank to your QuickBooks Desktop (QBDT) company. I'll write the steps below to get you going.
- Open QuickBooks.
- Go to Help, then select QuickBooks Desktop Help/Contact Us.
- Select Contact Us.
- Give a brief description of your issue, then select Continue.
- Sign in to your Intuit account and select Continue and then Continue with my account.
- If you don't already have an account, make sure to Create a new account.
6. We'll email you a single use code. Enter your code and select Continue.
- If you have more than one account, select the account you want to use and then Continue.
7. Select to chat with us or Have us call you.
See this article for more details: Contact QuickBooks Desktop support.
Additionally, if you happen to encounter errors when using QBDT, you can refer to this article to help you fix the error: Verify and Rebuild Data in QuickBooks Desktop.
Feel free to leave a comment below if you need further assistance with this. I'm determined to help you get through this situation. Stay safe!
