Quicken is currently unable to verify the financial institution, and it is an error that occurs because the connected services for Quicken 2017 and older have been discontinued. You cannot resolve such a Quicken error without upgrading to the Subscription Release of Quicken.
This error occurs due to various reasons such as
The system date is incorrect. It happens when daylight savings kicks in, but your computer doesn’t.
The financial institution does not support the release of Quicken.
The financial institution information is incorrect or missing.
The financial institution may not support that account type.
For more information about our discontinuation policy, please see Currently Supported Quicken Products.