Cannot start Jupyter Notebook kernel in VSCode

Question

I tried to install the Jupyter Notebook Kernel on VSCode, and it cant seem to connect, it shows this text in the VSCode:

Failed to start the Kernel. 
C:\Users\Theodore\AppData\Roaming\Python\Python310\site-packages\traitlets\traitlets.py:2412: FutureWarning: Supporting extra quotes around strings is deprecated in traitlets 5.0. You can use 'hmac-sha256' instead of '"hmac-sha256"' if you require traitlets >=5.
  warn(
C:\Users\Theodore\AppData\Roaming\Python\Python310\site-packages\traitlets\traitlets.py:2366: FutureWarning: Supporting extra quotes around Bytes is deprecated in traitlets 5.0. Use '7d0f2f44-841e-4868-9c82-374720d9f73e' instead of 'b"7d0f2f44-841e-4868-9c82-374720d9f73e"'.
  warn(
Bad address (C:\projects\libzmq\src\epoll.cpp:100). 
View Jupyter log for further details.

Python version : 3.10.4 Jupyter Notebook Version: 6.4.12

I tried switching to the kernel from Anaconda, but it also doesn't seem to work. Sometimes it just asks me to reinstall the ipykernel again. Thanks for your help.

Theodore Maximus · Accepted Answer · 2022-11-02 05:12:25Z

1

Turns out I have a VPN, and it made it crash, i used this in the CMD:

netsh winsock reset

and it worked. Thanks for your help

answered Nov 2, 2022 at 5:12

Theodore Maximus

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Community Over a year ago

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MingJie-MSFT · Accepted Answer · 2022-11-02 01:44:17Z

0

Use command pip install ipykernel in the cmd.

Alternative method:

Use following command in the terminal to reinstall pyzmq package.

pip uninstall pyzmq
pip install pyzmq

answered Nov 2, 2022 at 1:44

MingJie-MSFT

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1 Comment

Theodore Maximus Over a year ago

Hello, thanks for your answer, but it still won't work, this is what it shows now: ``` Failed to start the Kernel. Bad address (C:\projects\libzmq\src\epoll.cpp:100). View Jupyter log for further details. ```

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