At 23.55 last night, Cumulative WU KB4551762 finished downloading but didn't install. The message gave me the choice to either "Restart now" or "wait until my active hours". But my active hours are 08:00 - 01:00 so it should have restarted.
Is there any action that I should take?
PS In case it's relevant, I subscribed to receive Microsoft Security Advisory Notifications but I didn't get one for this update.