Why turn off a program?
We support a given release generally up to 6 months - and this is more for educators and enterprise labs which may be unable to push regular monthly updates and hotfixes. Even without "support," we also continue to allow old clients to connect beyond that, as long as feasibly possible.
We allowed new releases of Fusion to continue running on Win 7 and 8 long after formal support was dropped for those versions, but the door finally closed when issues could not be reproduced on 10 and 11. Much of Fusion's service infrastructure and data model have changed in that time - there is simply no way to make older clients from that era aware of the changes and upgrades we have made since then.
Fusion is designed as cloud software, first and foremost. If your application gets too far out of date, it can't connect to our servers once they get updated to newer endpoints, APIs, and security protocols, which means it cannot sync your data or license info.
While we're on the topic, the door is closing on Windows 10, too. There will be a point where app updates require 11 or newer, and sometime thereafter those un-updatable apps will cease to function. For this reason, we remind users in-app well in advance of ending support and update eligibility to give them adequate time to plan and budget for device upgrades.
Lance Carocci
Fusion QA for UI Framework/Cloud Workflows, and fervent cat enthusiast