Unity3D application won't start properly via Task Scheduler or Services

Question

I've been trying to get an application made with the Unity3D game engine to start on Windows boot. Currently, I've put a shortcut in the Startup folder but this requires a user to log on to the system. I'm looking for a way to start my Unity application without user interaction.

I've tried adding the .exe as a service and as a task in the Task Scheduler. I noticed that both these methods manage to start a process, visible in the Task Manager. See the following links:

Running the exe is supposed to launch a window, but this doesn't happen when launched via Task Scheduler/Services. I assume this is because something gets suppressed when run this way, but what?

I've tried running a batch script via Task Scheduler, which then start the EXE, but that gives the same result.

Answer 1

It appears that Unity3D is unable to acquire a graphics device when run as a background process. This means that running a Unity3D application that requires graphics as a background process cannot work. However, non-graphics applications started with the -batchmode command via Task Scheduler can work.