I had the reported issue with Quicken (and Fidelity). I have done the "reauthorization" multiple times now. I had all kinds of issues with a little circle with a line through it next to some Fidelity accounts listed in Quicken. I think it was because I have Fidelity accounts (and Fidelity Elan credit cards) for myself, my wife, and both kids. If Quicken connected to Fidelity using my info it would see most accounts (I'm authorized user for everybody) but not my wife's credit card (separate). If I connected her credit card through fidelity, it would clear the circle but circles would appear next to all of our other accounts. I finally set up her account through Elan and no more circles.
I am no longer getting errors and when I do a one step update I see the little working circles next to Fidelity in the update page but I don't see Fidelity listed in the summary page when it's done. I know I have no transactions to upload (everything is in) but the other accounts say "updated, no transactions to download" and Fidelity does not.
I'll watch it for a few days to see if it works when there are new transactions…