title: Permission denied to create a new notebook in Jupyter (Pyhtong3) on windows 10
body: <p><strong>Goal :</strong> I'm trying to use Jupiter for python3 projects by creating a new notebook.</p>
  
  <p><strong>Config</strong> : Windows 10, Python 3.6, 64bits, Anaconda</p>
  
  <p><strong>Error :</strong> Permission denied</p>
  
  <pre><code>[I 15:21:39.329 NotebookApp] Creating new notebook in 
  [W 15:21:39.379 NotebookApp] 403 POST /api/contents (127.0.0.1): Permission denied: Untitled.ipynb
  [W 15:21:39.379 NotebookApp] Permission denied: Untitled.ipynb
  [W 15:21:39.381 NotebookApp] 403 POST /api/contents (127.0.0.1) 52.52ms referer=http://localhost:8888/tree
  </code></pre>
  
  <p><strong>Searched solutions :</strong> </p>
  
  <ul>
  <li>The question has already been asked <a href="https://stackoverflow.com/questions/43643648/jupyter-notebooks-permission-denied-when-trying-to-create-new-notebook">here</a>, but not answered.</li>
  <li>I tried the solution proposed for linux <a href="https://stackoverflow.com/questions/46272880/cannot-open-new-jupyter-notebook-permission-denied">here</a>, but it doesn't help. I tried to change folder(.local) permissions with this command : <code>takeown /f ~/.local/share/jupyter /r</code> and tried to run with <code>py -m notebook --allow-root</code> (all in the cmd terminal). </li>
  </ul>
  
  <p><strong>Tried out:</strong> </p>
  
  <ul>
  <li><p>Reinstal ipykernel, pymzq (allowed me to actually launch jupyter)</p></li>
  <li><p>Upgrade ipython, prompt-toolkit, jupyter</p></li>
  <li>Open Anaconda prompt</li>
  <li>Go to C:\Users\your_name</li>
  <li>Write <code>jupyter trust untitled.ipynb</code> (trust is then not a know command)</li>
  <li>Then, write <code>jupyter notebook</code></li>
  </ul>
  
  <p>Any ideas?        </p>