No connection to kernel - Jupyter Notebook Windows 10

Question

I have Python3 pre-installed on my personal laptop and now i have installed Jupyter Notebook using PIP but when i create a new notebook using python 3 kernel, it always gives orange highlighted message "Connecting to Kernel" but never connects. OS - Windows 10, Personal laptop Network - Wifi and not connecting through any proxy Anti-virus - Uninstalled

Can someone help what could be the issue ?

Answer 1

I found the answer on stack overflow only in another thread.

Uninstall tornado 6

pip uninstall tornado

and reinstall tornado 5

pip install tornado==5.1.1

Answer 2

I had the same issue,i tried uninstalling tornado and reinstalling it ,i tried running it on different port , none of those worked.but i tried this and worked!!!!! open anaconda ===> Home ====> find jupyter notebook ====> go to the gear icon (settings) ===> first remove it then you see there is a install button under it,after installation it worked for me!!!!

Answer 3

I had the same issue,i tried uninstalling tornado and reinstalling it ,i tried running it on different port , none of those worked.but i tried this and worked!!!!! open anaconda ===> Home ====> find jupyter notebook ====> go to the gear icon (settings) ===> first remove it then you see there is a install button under it,after installation it worked for me!!!!

Answer 4

After having issues with this myself, and looking at the Tornado version, I found this wasn't the problem for me, instead after running the following in the relevant environment after installing ipykernel, this resolved the issue:

conda install -n base nb_conda_kernels

Answer 5

jupyter kernelspec list

Should list all kernels running on your system, make sure that the Python kernel path is accurate.

I would also try to run it over another port, in case if any network restrictions