[protocolture]

Windows does more of this than people notice actually. I was on a system the other day, Server 2016, it had downloaded 2 updates, both system file related, one had installed already and the other one was nagging for a reboot.

Stuff like Windows Defender doesnt even really ask if you want to install the update anymore, it just installs the new virus definitions immediately.

[contextfree]

Windows has been gradually "undocking" more and more stuff from the main OS install into separately updatable/restartable/etc components for a while.