Hello @Lothar
Thank you for reaching out to the Community regarding your issue, although I am sorry to hear that you are experiencing issues with your FI's. Could we get more information what FI's this happens to and also how long? Do the transactions still download or do you just get the error message. I would recommend taking a look at the article down below for more information and troubleshooting steps we're able to take. https://www.quicken.com/support/message-when-using-online-services-ol-362
Once you get a chance to try these steps, please let us know what you find. From there we'll better understand our next steps/options.
Thanks,
Quicken Francisco