Starting with Unity 2021.1, I see a process called UnityAutoQuitter.exe.
What is it doing?

Starting with Unity 2021.1, I see a process called UnityAutoQuitter.exe.
What is it doing?

You know how Unity just random crashes sometimes? In their continued improvements for modularity they’ve split this behavior off into its own application /s
This isn’t actually new in 2021.1, it’s been around since 2008 (if not earlier). Its job is to clean up one or more child process if the main Unity process exits. I think for most Unity processes it’s not necessary, but sometimes when interacting with third party applications (such as 3DSMax and Maya) it’s needed to get things cleaned up.