JUPYTER NOTEBOOK IS NOT LAUNCHING

[ultradluffy8]

First Anaconda Navigator was not launching, then I tried it via Anaconda Powershell Prompt, it worked but now Jupyter Notebook is not launching it shows this message in a pop up window-

**Traceback (most recent call last): File "C:\Anaconda3\Scripts\jupyter-notebook-script.py", line 6, in from notebook.notebookapp import main File "C:\Users\Harshit\AppData\Roaming\Python\Python37\site-packages\notebook\notebookapp.py", line 47, in from zmq.eventloop import ioloop File "C:\Users\Harshit\AppData\Roaming\Python\Python37\site-packages\zmq__init__.py", line 47, in

from zmq import backend File "C:\Users\Harshit\AppData\Roaming\Python\Python37\site-packages\zmq\backend__init.py", line 40, in reraise(*exc_info) File "C:\Users\Harshit\AppData\Roaming\Python\Python37\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise raise value File "C:\Users\Harshit\AppData\Roaming\Python\Python37\site-packages\zmq\backend__init__.py", line 27, in _ns = select_backend(first) File "C:\Users\Harshit\AppData\Roaming\Python\Python37\site-packages\zmq\backend\select.py", line 28, in select_backend mod = import__(name, fromlist=public_api) File "C:\Users\Harshit\AppData\Roaming\Python\Python37\site-packages\zmq\backend\cython__init.py", line 6, in from . import (constants, error, message, context, ImportError: cannot import name 'constants' from 'zmq.backend.cython' (C:\Users\Harshit\AppData\Roaming\Python\Python37\site-packages\zmq\backend\cython\init__.py)**

I also have reinstalled it 2 time but this dosn't work. I don't know what to do. Please help me.

[Kitty1989]

Same problem. Reinstalled twice.

[Abhisus2112]

Same for me as well

[Eyobs-droid]

try updating pyzmq packages conda update pyzmq jupyter for updating or reinstall it pip uninstall pyzmq pip install pyzmq