That could be a hint of what\'s going on. If Windows can\'t access the remote system, NEWT won\'t be able to either. So it\'s definitely something having to do with Windows security.
If you\'re running the built-in Windows firewall on the remote machines, you can do something that should allow Windows and NEWT to access them.
Under firewall exceptions, enable the \"Allow remote administration\". If you\'re running on a domain, it\'s very easy to change this at the Primary Domain Controller.
Please let us know if that doesn\'t help.