title: Anaconda jupyter notebook "connection failed" error
body: <p>I recently installed anaconda and tried to run Jupyter Notebook. I am using Windows 10. I opened a folder and ran the notebook. Whenever I click to open a file, after a few seconds of loading the file onto a new tab, I see the following error message:
  <a href="https://i.stack.imgur.com/49vfT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/49vfT.png" alt="Error message" /></a></p>
  <p>When I click &quot;ok&quot;, I see this as well:
  <a href="https://i.stack.imgur.com/Dt5dr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Dt5dr.png" alt="enter image description here" /></a></p>
  <p><a href="https://i.stack.imgur.com/sPtIb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sPtIb.png" alt="enter image description here" /></a></p>
  <p>I have re-installed anaconda more than thrice but this problem remains. My internet connection is not an issue here as I am able to run google on other tabs.
  The following is the error message on the anaconda prompt: \</p>
  <pre><code>
  (base) C:\Users\aayus&gt;cd c:\MLcourse
  
  (base) c:\MLCourse&gt;jupyter-notebook
  [W 2021-05-25 12:49:15.300 LabApp] 'ip' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
  [W 2021-05-25 12:49:15.301 LabApp] 'ip' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
  [I 2021-05-25 12:49:15.317 LabApp] JupyterLab extension loaded from C:\Users\aayus\anaconda3\lib\site-packages\jupyterlab
  [I 2021-05-25 12:49:15.317 LabApp] JupyterLab application directory is C:\Users\aayus\anaconda3\share\jupyter\lab
  [I 12:49:15.322 NotebookApp] Serving notebooks from local directory: c:\MLCourse
  [I 12:49:15.323 NotebookApp] Jupyter Notebook 6.3.0 is running at:
  [I 12:49:15.324 NotebookApp] http://localhost:8888/?token=a24e8ab3aa1629c4892dded671be9d26b149e7492d74a1e9
  [I 12:49:15.324 NotebookApp]  or http://127.0.0.1:8888/?token=a24e8ab3aa1629c4892dded671be9d26b149e7492d74a1e9
  [I 12:49:15.324 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
  [C 12:49:15.366 NotebookApp]
  
      To access the notebook, open this file in a browser:
          file:///C:/Users/aayus/AppData/Roaming/jupyter/runtime/nbserver-21792-open.html
      Or copy and paste one of these URLs:
          http://localhost:8888/?token=a24e8ab3aa1629c4892dded671be9d26b149e7492d74a1e9
       or http://127.0.0.1:8888/?token=a24e8ab3aa1629c4892dded671be9d26b149e7492d74a1e9
  [W 12:49:27.828 NotebookApp] Notebook ConditionalProbabilityExercise.ipynb is not trusted
  Bad address (C:\ci\zeromq_1602704446950\work\src\epoll.cpp:100)
  [I 12:49:28.339 NotebookApp] Kernel started: 4ed3dc80-f87f-41f4-9981-320da9710f87, name: python3
  Bad address (C:\ci\zeromq_1602704446950\work\src\epoll.cpp:100)
  Bad address (C:\ci\zeromq_1602704446950\work\src\epoll.cpp:100)
  
  (base) c:\MLCourse&gt;[IPKernelApp] WARNING | Parent appears to have exited, shutting down.
  </code></pre>
  <p>Can someone pls help with this? I am a fair beginner, and cannot find an answer.
  Thanks in advance</p>