For the Fall Creators Update (version 1709), they had already slashed it to 51 minutes on average.For the upcoming April 2018 Update (version 1803), Microsoft promises that your fresh Windows installation will be back up and running in no less than 30 minutes. Many steps required to install updates, which used to interrupt the installation and thus increase your PC’s offline time, will now happen in the background while you’re using Windows.Installing the Windows 10 Creators Update (version 1703) took around 82 minutes.
It will guide you through performing a Windows Update.
After the computer has rebooted, make sure to visit the Windows update page again to make sure all the files you need are downloaded.
Users of Microsoft Windows XP and later versions can have Microsoft Windows automatically update their computer.
We highlight what has changed in Windows Update, explain how it works now, and how you can still customize it to your needs.
In Windows 10, updates are mandatory and more automated than in previous Windows versions.