Updates are always welcome until they result in the termination of well-established Online Services. I've faced this a handful of times and always have one or two accounts hung up, requiring many attempts to reset Quicken's Online Services.
In the past, the account(s) eventually re-established after several cycles through the security steps (I bank with JP Morgan). I respect and appreciate the security handshakes that protect us all, but I am VERY frustrated when the eventual offering of accounts to connect doesn't even include one or more of the very accounts named in JP Morgan's Account Details page at the start.
I just went through five attempts to get my largest account back online (you know the many steps required), only to see that the account offerings for setup don't include the account at issue, even though it was shown in one of the JPM setup screens. What goes? What can I do to get back in business?
[Edited - Readability]
