I'd appreciate some suggestions related to the problem below.   When using a Chromebook before the initial operating system login, I'm trying to join a wireless network. The network is configured with a splash page with AD authentication. The credentials page shows, and I can successfully enter user id and password. After submitting the login I receive a site can not be reached message. n84.network-auth.com null's dns address could not be found. An nslookup of n84.network-auth.com resolves and returns a 209.206.63.86.   The work around has been to then reboot the chromebook and login again and we usually have network access.   Thank you   ... View more