Can't open Jupyter notebook with Anaconda

Question

I just installed Anaconda, in my Surface Pro 3, with Windows 10, using the provided installer for 64-bit. When I try to launch "jupyter notebook" I always get the following message:

Microsoft Windows [Version 10.0.14393] (c) 2016 Microsoft Corporation. All rights reserved.

C:\Users\Carlos>jupyter notebook Traceback (most recent call last):

File "C:\Program Files\Anaconda3\Scripts\jupyter-notebook-script.py", line 3, in import notebook.notebookapp

File "C:\Program Files\Anaconda3\lib\site-packages\notebook\notebookapp.py", l ine 32, in from zmq.eventloop import ioloop

File "C:\Program Files\Anaconda3\lib\site-packages\zmq__init__.py", line 34, in from zmq import backend

File "C:\Program Files\Anaconda3\lib\site-packages\zmq\backend__init__.py", l ine 40, in reraise(*exc_info)

File "C:\Program Files\Anaconda3\lib\site-packages\zmq\utils\sixcerpt.py", lin e 34, in reraise raise value

File "C:\Program Files\Anaconda3\lib\site-packages\zmq\backend__init__.py", l ine 27, in _ns = select_backend(first)

File "C:\Program Files\Anaconda3\lib\site-packages\zmq\backend\select.py", lin e 26, in select_backend mod = import(name, fromlist=public_api)

File "C:\Program Files\Anaconda3\lib\site-packages\zmq\backend\cython__init__ .py", line 6, in from . import (constants, error, message, context,

ImportError: DLL load failed: The specified module could not be found.

I tried to uninstall/install again several times, I tried to install it just for me or for all the users in the computer, I tried to update anaconda first...with no success. Any clue?

Thanks!

Answer 1

It seems to be a problem with the default installation of Anaconda. So, I removed the pyzmq package, which seems to be the problematic one.

This is what I have done:

1. conda uninstall pyzmq (This also removes jupyter related packages!)
2. conda install pyzmq (to reinstall it)
3. conda install jupyter (to reinstall jupyter related packages)

Now I can open Jupyter Notebook!

Answer 2

Regarding the issue of opening Jupyter Notebook with Anaconda, I was having this error message:

[W 12:34:52.309 LabApp] Permission to listen on port 8984 denied.
[C 12:34:52.309 LabApp] ERROR: the notebook server could not be started because no available port could be found.

It was trying each port but failing because of no permission. Running jupyter on a custom port fixed the problem:

jupyter notebook --port 9999