Question

I have a Kerberos secured page, which I can access successfully in IE and Chrome without retyping my user credentials. So the single sign on worked.

With FF a 401 Error page comes directly and with Safari a loginbox comes and when I insert my user credentials it fails and a 401 Error page appears.

I think it works in Chrome because it guesses the SPN right: http://dev.chromium.org/developers/design-documents/http-authentication look under Kerberos SPN generation.

So my Question is:
Why doesn’t it work in FF and Safari, even when login in with the user credentials?

Answer 1

You have to enable Negotiate in Firefox about:config. Google will help.