You can also set additional notifications before your system restarts to give you more time to save your work. If you happen to be a Windows Insider, you can set your active hours for 18 hours with an option to choose when the OS should finish its updates. You will now receive prompts whenever updates require a restart of your PC. This way, you will no longer find the need to keep checking the Settings menu if updates have already been installed. You can control this option by following these steps: It is also important for users to be notified when the system needs to reboot. Go through those easy and simple steps and you no longer have to worry about your computer restarting whenever there is a need for you to leave it for a short period of time. Know that Windows schedules its own reboot first and you will have to override it through the Settings page to adjust it to your own schedule.
If you want updates to start immediately, you can choose the Restart Now option at the bottom of the page.