I have been running Quicken 2017 v4.8.6 on an iMac 24 M1, 2021 OS Sonoma 14.7.3 without any problems. I use it to keep track of my finances and write the occasional check. I do not use Quicken to connect to any financial institutions/download data etc. Has anyone upgraded to the latest version of Sequoia and still been able to use Quicken 2017 without issues? I know they have switched to a subscription model.