I'm currently experimenting with a custom shell on a couple of similar Windows 8.1 devices.
When I exit the custom shell and then manually start explorer
through Task Manager, sometimes it will start the default Windows 8.1 shell, sometimes it will only start a file explorer.
From past experience, I gathered that the latter case usually happens if explorer
is already running. But there are no running Windows Explorer instances I'm aware of.
So, what controls this behavior? How can I force Explorer to always start in "shell mode"?