It means that the DNS service is not working properly on either your side or the server's side. Changing DNS server to Google DNS or OpenDNS , or remove all cookies and cached files on your browser will help to resolve this issue immediately. Like any other error, there are several ways you can solve DNS_PROBE_FINISHED_NXDOMAIN problems by yourself.
Release or Renew Your IP Address
Change DNS server
Restart DNS Client service
Reset hosts file
Reset Chrome Flags
Reset Winsock program