My company makes an app built with Adobe Air which talks to our webserver for user authentication. Some users are not able to login. Running Charles Proxy tells us that the "host cannot be found." Loading up the webserver in IE, initially we weren't able to visit the site, we had to add it to trusted sites. My guess is that some security setting is denying our app as well. Does anyone have any suggestions as far as where to make security looser for our app?