MacOS – Not able to update to macOS High Sierra

Like on Sierra vhosts seem to need to be activated

so:

sudo vi /etc/apache2/httpd.conf

and uncomment the following lines by removing the hashtag (#)

.#LoadModule vhost_alias_module libexec/apache2/mod_vhost_alias.so

and

.#Include /private/etc/apache2/extra/httpd-vhosts.conf

then

sudo apachectl restart

and you'll be good to go

Given the context of your question, it's unclear if you re-downloaded the installer from the App Store after the first failure or if you ran the upgrade application again. Yes, your computer is supported for the High Sierra update. I have a few suggestions:

• Delete the upgrade application (go to the Finder and delete it).
• Re-download the upgrade application from the App Store.
• Run the application again.

If the problem persists, the solution will probably involve something more drastic. If you have an available flash drive, try making a bootable flash drive installer. Restart and hold (Option) and select the bootable USB disk and hit enter. Proceed through the install process. Notify us of the result and we'll proceed from there :)

Good luck ;)