I have five or so Windows 10 installations—desktop, laptop, and multiple virtual machines running running on my Mac using Parallels 12. I say "or so" because some of my virtual machines have been broken by the Windows Update (WU) process.
I really like Windows 10, it is now almost as good as MacOS to use for my daily work. However, since Windows 10 was released, I have literally wasted months struggling to install Windows Updates. I am not alone: