Suppress NTLM dialog box after unauthorized request

Question

In a recent sharepoint project, I implemented an authentication webpart which should replace the NTLM authentication dialog box. It works fine as long as the user provides v

Answer 1

IIRC, the browser pops the auth dialog when the following comes back in the request stream:

• Http status of 401
• WWW-Authenticate header

I would guess that you'd need to suppress one or both of those. The easy way to do that is to have a login method that'll take a Base64 username and password (you are using HTTPS, right?) and return 200 with a valid/invalid status. Once the password has been validated, you can use it with XHR.