Why does Internet Explorer not send HTTP post body on Ajax call after failure?

Question

We are able to reliably recreate the following scenario:

1. Create a small HTML page that makes AJAX requests to a server (using HTTP POST)
2. Disconnect fr

Answer 1

Are you using NTLM authentication?

When using NTLM authentication, IE doesn't send post-data. It sends header info, expects an unauthorized response send authorization, and after the 're-authentication' sends the post.