Whenever I click open on creative cloud (or try to start photoshop from anywhere), nothing happens. When I check the task manager it says that Photoshop 2023 is open but I can't use it. I've tried deleting preferences, downgrading versions, ending the process on task manager, and fully reinstalling it twice. I don't really understand why it won't work, it was working fine 2 days ago.
I've reported the same issue. After launching and then quitting PS, it leaves behind a process that you can see in task mgr. As long as that process is present, PS will not <re>launch, since it doesn't allow duplicate instances.
This has been an irritating, long-standing problem for quite a few months. I first noticed it in PS 22, did a clean uninstall, and then a reinstall, problem existed. No plug-ins were in use at that time.
It also happened when I paved my production box, did a clean (obviously) install of PS, and the problem repr'd as well.