Type "net stop wuauserv" and hit Enter, then follow that with "net stop bits" and hit Enter again.
Back in Windows proper, navigate to the C:\ Windows\ Software Distribution folder, and delete everything you find therein.
Operating system updates are a necessary evil, like taxes and car MOTs: they can be a real chore, but they're essential for a happy and peaceful life.
You might not care for Windows updates, but they keep you protected, squash nasty bugs and generally keep the OS running as smoothly as possible.
You can find the option via the Recovery tab on the Update & Security page in the Settings app – note that third-party apps are removed too, so these will need installing again.