Hi,
I have a similar issue..
I did update the network, and I’ve created a new site that I can login it’s dashboard but when I intend to visit the site, I get 404 hosting error..!
i don’t know if the problem because of the last release of WordPress or the general Internet connection problem the happened during the last 12 hours for a number of web hosting providers..!
I did deactivate all plugins, but nothing went better..!
Any Idea please..?
Thanks.