I reauthorized access to Quicken with Fidelity. Quicken reported a successful reauthorization, but the investment account that has a linked cash account shows it never was set up in the Online tab for the Account Details. Quicken will not set it up.
it appears that the account link setup pop up tries to incorrectly tries to connect the linked cash account name instead of the investment account. The connection link never occurs and quicken displays no errors.
I had to revert the linked cash to just an investment account for quicken to connect the account.