I have developed a website which uses Ajax POST using jQuery to a PHP server.
While it works perfectly when accessed from a web browser at home, some of my Ajax requests fail when accessed from a web browser on my day job's corporate network, and I get the following error shown by Firebug: 407 Proxy Authentication Required ( Forefront TMG requires authorization to fulfill the request. Access to the Web Proxy filter is denied. )
. Note that Chrome does not show the error but it is still blocked, and IE11 blocks it as well but I haven't been able to view the message using Development Tools due to an unrelated issue (Error in jquery.validate.js in MVC 4 Project with jQuery 1.9).
I have no ability to modify anything on the corporate network, nor is it my desire to do so. My desire is to modify the HTML/JavaScript/Headers which my server provides to eliminate blocking of the request so others do not experience this issue.
What can be done?