[dsalfdslfdsa]

You haven't re-created the described problem - Teams sets itself to auto-start again after you start it yourself. After all, it's very reasonable that you might want to join the occasional Teams meeting but not want it running after every boot.

[Sakos]

I'm not sure if it's a particular version or environment that does this, but at the very least I can't replicate it on my home PC with Teams (personal). If I disable it in the task manager's autostart, it remains disabled if I start Teams. It won't even let me enable "Auto-start" in the Teams settings if it's disabled in the task manager.