User get notification that update was unsuccessfull and previous version of operating system was being restored. One of issue is impossibility to finish installation, it got to 23%, 27%, 75% or some other part of installation, and then stayed there for few hours (from two to 10 hours by end user experience), at the end it freezes (circle stopped spinning). There are different experiences by ends users regarding updating Windows 10 to new version. You can read about installing Windows 10 Creators update to your machine at reference. After Microsoft delivered Windows 10 Creators update to your machine, you need to install it.
Windows 10 Creators update will be delivered to your machines if your Windows 10 has automatic updates enabled. Few weeks ago Microsoft released new version of Windows 10 operating system, named Windows 10 Creators update, version 1703. Windows 10 was released by Microsoft on July 2015.
