The Windows Update tool in Windows 10 is known for being a pain when it comes to restarts and large updates, but that's changing with the Creators Update.
When Windows 10 launched back in 2015, it quickly became apparent that Microsoft's new Windows Update system was a little forceful when it came to restarts, giving the user no choice outside of a warning that a restart would soon be taking place, along with unnecessarily large feature updates. This new update method was heavily criticized by the media and users, so much so that with the Windows 10 Creators Update Microsoft made several improvements that make Windows Update much more bearable.
Full story from the WindowsCentral blog...
When Windows 10 launched back in 2015, it quickly became apparent that Microsoft's new Windows Update system was a little forceful when it came to restarts, giving the user no choice outside of a warning that a restart would soon be taking place, along with unnecessarily large feature updates. This new update method was heavily criticized by the media and users, so much so that with the Windows 10 Creators Update Microsoft made several improvements that make Windows Update much more bearable.

Full story from the WindowsCentral blog...