- Electron version: >=0.37
- Operating system: ubuntu linux x64

When server send header 'WWW-Authenticate: Negotiate' electron not send kerberos ticket. 
`app.allowNTLMCredentialsForAllDomains(true)`  is called.

On electron v0.36.x it work's fine.

atom/browser/atom_browser_context.h
#ifndef ATOM_BROWSER_ATOM_BROWSER_CONTEXT_H_
#define ATOM_BROWSER_ATOM_BROWSER_CONTEXT_H_
#include <string>
#include "brightray/browser/browser_context.h"
namespace atom {
class AtomDownloadManagerDelegate;