title: Beaker Notebook start Anaconda Python on Windows
body: <p>How should I configure Beaker to use my pre-installed Anaconda Python3? I followed the instructions <a href="http://beakernotebook.com/getting-started?windows&amp;scroll" rel="nofollow">here</a>, and then <a href="https://github.com/twosigma/beaker-notebook/wiki/Language-Preferences" rel="nofollow">here</a>, but with no success. My <code>beaker.pref.json</code> file looks like:</p>
  
  <pre><code>{
    "autocomplete-parameters" : "true",
    "pref-format" : "1",
    "allow-anonymous-usage-tracking" : true,
    "languages" : {
      "IPython" : {
        "path" : "c:\\Python\\Anaconda"
      },
      "Python2" : {
        "path" : "c:\\Python\\Anaconda\\envs\\py27"
      },
      "Python3" : {
        "path" : "c:\\Python\\Anaconda"
      }
    },
    "advanced-mode" : false,
    "edit-mode" : "default"
  }
  </code></pre>
  
  <p>I tried it without <code>Python2</code>, but still not work. My browser always open, but it's unable to connect to the server.</p>
  
  <p>The output of <code>beaker.pref.json</code> run is:</p>
  
  <pre><code>...
  c:\Beaker&gt;REM limitations under the License.
  starting nginx instance (c:\Beaker/nginx)
  nginx-stderr&gt;nginx: [alert] could not open error log file: CreateFile() "C:\Users\itsme\.beaker\v1\nginx8685613245756631317/logs/error.log" failed (1113: Form
  atMessage() error:(15100))
  nginx-stderr&gt;2016/04/29 16:03:50 [emerg] 3548#14984: CreateFile() "C:\Users\itsme\.beaker\v1\nginx8685613245756631317/conf/nginx.conf" failed (1113: FormatMes
  sage() error:(15105))
  [main] INFO org.eclipse.jetty.server.Server - jetty-8.1.13.v20130916
  [main] INFO org.eclipse.jetty.server.AbstractConnector - Started SelectChannelConnector@127.0.0.1:8802
  
  Connecting to http://127.0.0.1:8801/
  </code></pre>
  
  <p>Of course, <code>Jupyter</code> works perfectly.
  Thank you for any help!!</p>