(Ignore the line "But I first had the fault on 3 Jan 2016, before the KB3132372 update, unless there is a clash of timezones here." hereinabove.)

The faulty update first came to my computer on 30 Dec 2016 allegedly, but started showing its effect on 3 Jan 2016 (by British time). Is there a time lag between the update coming onto my computer and that update being installed? Should I leave my computer running overnight?