Script with Windows credentials authentication

I am trying to test the performance of a website that has a Windows Security credentials authentication that asks for username and password. I’ve tried it in a separate browser to make sure that it is working and accessible. I tried the HTTP basic authentication, but realized that it won’t work. Then I took a look at scripting. The example in the scripting documentation gives a sample of logging into an AOL webmail account. This still won’t work exactly like it should because the login authentication I need is not built into the webpage, but is part of a Windows authentication popup. Is there a special script that deals with Windows authentication?

Windows authentication isn’t currently supported. If you are running a private instance and the OS user’s credentials are already populated then it should work but there is no way to script the login otherwise (currently).