Why is Macos not updating to High Sierra?

Question

macOS

Introductory:

MacBook Pro (Retina, 15-inch, Late 2013)
macOS Sierra 10.12

I download the updater from the appstore, I press continue, and it ends with such an error and closes.

Answer 1

Answer: some broken software adds hostsnot only the necessary lines, but also lines with Apple servers. You need to clean them and everything is ok.

Answer 2

here yesterday ... the question was in high sierra about the fact that the screen is covered with gasoline stains ... the meaning of the answer is that this update is jamb