I created a multisite from an existing install. All went fine. I modified wp-config and htaccess. I set up a new subdomain (http://user1.site.com) and associated a new user with it. It generated the login emails. When I try to log in under the subdomain, I get an error message from both Google Chrome and internet Explorer saying it cannot find the webpage. No error # associated with the message.
I am really stymied here and would appreciate any help.