Cannot get user profile after authentication

[shock-n-awesome]

I'm trying to access the user profile created by the passport-windowsauth authentication, and I seem to be missing something- I'm just not sure what. I want to be able to access the username and groups from the profile.

Here is my app.js:

/*jslint node: true */
/*jshint multistr: true */
var express = require('express');
var app = express();
var port = process.env.PORT || 5500;

app.use(express.static('public'));
app.set('views', './src/views');
app.set('view engine', 'ejs');

var passport = require('passport');
var WindowsStrategy = require('passport-windowsauth');

passport.authenticate(new WindowsStrategy({
  ldap: {
    url:             'ldapurl',
    base:            'DC=dc,DC=dc',
    bindDN:          'somename',
    bindCredentials: 'itspss'
  },
  getUserNameFromHeader: function (req) {
    //in the above apache config we set the x-forwarded-user header.
    //mod_auth_kerb uses user@domain
    return req.headers['x-forwarded-user'].split('@')[0];
  }
}, function(profile, done){
  User.findOrCreate({ waId: profile.id }, function (err, user) {
    done(err, user);
  });
}));

app.get('/', function (req, res) {
    res.render('index', { user: req.user.sAMAccountName
    });
});

app.listen(port, function (err) {
    console.log('running server on port ' + port);
});

And my index.ejs is:

hello world 
<br>
your name is <%=user%>

When I try to open the page, it authenticates, but I get this error:

TypeError: Cannot read property 'sAMAccountName' of undefined
   at /home/.../node_test/app.js:35:38
   at Layer.handle [as handle_request]     (/home/.../node_test/node_modules/express/lib/router/layer.js:95:5)
   at next (/home/.../node_test/node_modules/express/lib/router/route.js:131:13)
   at Route.dispatch (/home/.../node_test/node_modules/express/lib/router/route.js:112:3)
   at Layer.handle [as handle_request] (/home/.../node_test/node_modules/express/lib/router/layer.js:95:5)
   at /home/.../node_test/node_modules/express/lib/router/index.js:277:22
   at Function.process_params (/home/.../node_test/node_modules/express/lib/router/index.js:330:12)
   at next (/home/.../node_test/node_modules/express/lib/router/index.js:271:10)
   at SendStream.error (/home/.../node_test/node_modules/express/node_modules/serve-static/index.js:121:7)
   at emitOne (events.js:77:13)

What am I missing?