I'm getting in touch with Microsoft about this. Maybe they will know how to manage this program. I'll post their response here so that others experiencing this issue can get some answers.
It's not a Windows feature, its Adobe CC and Windows not playing well together. Chatted with Microsoft today and leaned that using a clean boot to manage problems with apps is very helpful and pretty simple. Somehow the Adobe CC client or some part of it persisted in startup even after changing the preferences and disabling the app's launch, and once it was running it was able to override attempts to disable it. Using Windows system configuration to disable it and boot without it running allowed me to make changes that persisted.
Steps here if you're new to it too:
1 Windows key+r or right click Windows icon on your taskbar and select run.
2 Type msconfig in the Run window to bring up the System Configuration window and select the services tab from the choices there.
3 If it isn't already checked, check the box below the services list marked hide all Windows services so only non-Windows services show, and then look for Adobe services in the list and uncheck the box to the left. If you can't find the service or just don't want to look you can click or tap disable all and click or tap okay,
You'll be prompted to restart your computer so make sure anything you're working on is saved and restart. After restarting your computer you'll be in a clean boot and if you look at the startup tab in task manager you can make sure any Adobe products shown there that you don't want to start with your computer are disabled, or disable them if they aren't. At this point the preference settings in the Adobe app should apply and persist. Clean boot mode will restrict use so to return to normal boot you'll want to go back into System Configuration and re-enable services, then follow the prompt to restart again, otherwise you'll have some problems running related programs/apps them next time.
If this works for you the way it is for me you'll have no Adobe process running and if you look in Windows settings/apps and the controls for startup you'll find the switch in the off position instead of on. I am not having to control it through a third party program and it remains disabled until used even after interacting with the desktop client and restarting my computer.
As usual, make sure your OS and your Adobe client/apps are kept up to date.
Good luck
Edit: Info wasn't quite complete. Changed, startup, to, services with respect to system configuration steps to make sure people get to the correct tab.
Cheers
AdChoices