Error When Adding Accounts: "Oops. We're having a problem - CC-501" in Quicken for Windows or FDP-176 in Quicken for Mac

Overview

You may receive the following error while attempting to add an account to Quicken for Windows:

You may receive the following error while attempting to add an account to Quicken Mac:

To resolve this issue

Please contact Quicken Support. These errors indicate an internal issue and require Quicken Support agents to review logs and provide further assistance.