- 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
AtomURLRequestJobFactory* job_factory() const { return job_factory_; }
  AtomNetworkDelegate* network_delegate() const { return network_delegate_; }
 private:
  scoped_ptr<AtomDownloadManagerDelegate> download_manager_delegate_;
  scoped_ptr<WebViewManager> guest_manager_;
  scoped_ptr<AtomPermissionManager> permission_manager_;
  
  AtomCertVerifier* cert_verifier_;
  AtomURLRequestJobFactory* job_factory_;
  AtomNetworkDelegate* network_delegate_;
  bool allow_ntlm_everywhere_;
  DISALLOW_COPY_AND_ASSIGN(AtomBrowserContext);
};
}  
#endif