I have a Capital One SavorOne credit card. I can login into the website. When I try to add the account in Quicken, it successfully opens the Capital One login page. If I enter the correct username/password it accepts it, reports no error, and takes me back to the login page. If I enter an incorrect username/password it corrects reports that it is incorrect. Logging in to the website before trying to connect does not change anything.
Does this work for anyone?