# Kernel dies in newly created conda environments win10

**URL:** <https://discourse.jupyter.org/t/kernel-dies-in-newly-created-conda-environments-win10/3759>\
**Category:** Notebook\
**Created:** [March 26, 2020, 10:51am UTC](https://discourse.jupyter.org/t/kernel-dies-in-newly-created-conda-environments-win10/3759 "2020-03-26T10:51:09Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![iwanV](https://avatars.discourse-cdn.com/v4/letter/i/7ab992/32.png) [@iwanV](https://discourse.jupyter.org/u/iwanV)\
**Post date:** [March 26, 2020, 10:51am UTC](https://discourse.jupyter.org/t/kernel-dies-in-newly-created-conda-environments-win10/3759/1 "2020-03-26T10:51:10Z")

</div>

Hello everyone,

I’ve tried for 2 days to create a new environment in conda with a kernel for Jupyter from which to run Jupyter Notebook, but the kernel keeps dying if I try to execute scripts on it. From my base conda environment everything runs fine, here are its specifications:

```
 active environment : base
active env location : C:\Users\Vaandrager\anaconda3
        shell level : 1
   user config file : C:\Users\Vaandrager\.condarc

```

populated config files : C:\Users\Vaandrager.condarc  
conda version : 4.8.2  
conda-build version : 3.18.11  
python version : 3.7.6.final.0  
virtual packages :  
base environment : C:\Users\Vaandrager\anaconda3 (writable)  
channel URLs : /main/win-64 ##with a correct URL infront which Im not allowed to post  
/main/noarch  
/r/win-64  
/r/noarch  
/msys2/win-64  
/msys2/noarch  
package cache : C:\Users\Vaandrager\anaconda3\pkgs  
C:\Users\Vaandrager.conda\pkgs  
C:\Users\Vaandrager\AppData\Local\conda\conda\pkgs  
envs directories : C:\Users\Vaandrager\anaconda3\envs  
C:\Users\Vaandrager.conda\envs  
C:\Users\Vaandrager\AppData\Local\conda\conda\envs  
platform : win-64  
user-agent : conda/4.8.2 requests/2.22.0 CPython/3.7.6 Windows/10 Windows/10.0.18362  
administrator : False  
netrc file : None  
offline mode : False

I use the following commands to create an environment using the anaconda prompt:  
conda create -n python2\_env python=2 ipykernel jupyter  
conda activate python2\_env  
python -m ipykernel install --user --name python2\_env --display-name “python2\_env”

This is the kernelspec list  
(base) C:\Users\Vaandrager\>jupyter kernelspec list  
Available kernels:  
python2\_env C:\Users\Vaandrager\AppData\Roaming\jupyter\kernels\python2\_env  
python3 C:\Users\Vaandrager\anaconda3\share\jupyter\kernels\python3

If I check the kernel.json file where it was installed it looks similar to the base kernel file, except that it points to the anaconda3\envs\python2\_env\python.exe instead of anaconda3\python.exe (which I think is the whole point).

If I open jupyter notebook from the conda prompt from the python2\_env or if I open jupyter notebook from base and then change kernels, the notebook opens initially, but after a few seconds or if I execute a cell, the kernel dies, giving the following error (here I have opened jupyter notebook from base, then opened an example ipynb (in this case a cplex example notebook) and then switched kernel to the newly created kernel in a seperate conda environment):

(base) C:\Users\Vaandrager\>jupyter notebook  
[I 09:39:31.139 NotebookApp] JupyterLab extension loaded from C:\Users\Vaandrager\Anaconda3\lib\site-packages\jupyterlab  
[I 09:39:31.139 NotebookApp] JupyterLab application directory is C:\Users\Vaandrager\Anaconda3\share\jupyter\lab  
[I 09:39:31.170 NotebookApp] Serving notebooks from local directory: C:\Users\Vaandrager  
[I 09:39:31.170 NotebookApp] The Jupyter Notebook is running at:  
[I 09:39:31.170 NotebookApp] URL #not allowed to post  
[I 09:39:31.170 NotebookApp] or URL #not allowed to post  
[I 09:39:31.170 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).  
[C 09:39:31.248 NotebookApp]

```
To access the notebook, open this file in a browser:
    file:///C:/Users/Vaandrager/AppData/Roaming/jupyter/runtime/nbserver-3764-open.html
Or copy and paste one of these URLs:
     URL #not allowed to post
 or URL #not allowed to post

```

[W 09:39:58.141 NotebookApp] Notebook Documents/IBM/ILOG/CPLEX\_Studio\_Community129/python/examples/cp/jupyter/house\_building.ipynb is not trusted  
[I 09:40:06.454 NotebookApp] Kernel started: 22513916-1e6b-47db-9341-621c49f7c53f  
[I 09:40:07.728 NotebookApp] Adapting from protocol version 5.1 (kernel 22513916-1e6b-47db-9341-621c49f7c53f) to 5.3 (client).  
[I 09:40:15.434 NotebookApp] KernelRestarter: restarting kernel (1/5), keep random ports  
kernel 22513916-1e6b-47db-9341-621c49f7c53f restarted  
[E 09:40:15.449 NotebookApp] Failed to run command:  
[‘C:\Users\Vaandrager\anaconda3\envs\python2\_env\python.exe’, ‘-m’, ‘ipykernel\_launcher’, ‘-f’, ‘C:\Users\Vaandrager\AppData\Roaming\jupyter\runtime\kernel-22513916-1e6b-47db-9341-621c49f7c53f.json’]  
PATH=‘C:\Users\Vaandrager\Anaconda3;C:\Users\Vaandrager\Anaconda3\Library\mingw-w64\bin;C:\Users\Vaandrager\Anaconda3\Library\usr\bin;C:\Users\Vaandrager\Anaconda3\Library\bin;C:\Users\Vaandrager\Anaconda3\Scripts;C:\Users\Vaandrager\Anaconda3\bin;C:\Users\Vaandrager\anaconda3\condabin;C:\Program Files\IBM\ILOG\CPLEX\_Studio\_Community129\opl\bin\x64\_win64;C:\Program Files\IBM\ILOG\CPLEX\_Studio\_Community129\opl\oplide;C:\Program Files\IBM\ILOG\CPLEX\_Studio\_Community129\cplex\bin\x64\_win64;C:\Program Files\IBM\ILOG\CPLEX\_Studio\_Community129\cpoptimizer\bin\x64\_win64;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0;C:\WINDOWS\System32\OpenSSH;C:\Program Files\Git\cmd;C:\Program Files (x86)\Wolfram Research\WolframScript;C:\Users\Vaandrager\AppData\Local\Microsoft\WindowsApps;C:\Program Files\JetBrains\PyCharm Community Edition 2019.3.4\bin;.;C:\Program Files\JetBrains\PyCharm 2019.3.4\bin;.;.’  
with kwargs:  
{‘stdin’: -1, ‘stdout’: None, ‘stderr’: None, ‘cwd’: ‘C:\Users\Vaandrager\Documents\IBM\ILOG\CPLEX\_Studio\_Community129\python\examples\cp\jupyter’, ‘close\_fds’: False}

[E 09:40:15.450 NotebookApp] Exception in callback \<bound method KernelRestarter.poll of \<jupyter\_client.ioloop.restarter.IOLoopKernelRestarter object at 0x00000234E1282708\>\>  
Traceback (most recent call last):  
File “C:\Users\Vaandrager\Anaconda3\lib\site-packages\tornado\ioloop.py”, line 907, in \_run  
return self.callback()  
File “C:\Users\Vaandrager\Anaconda3\lib\site-packages\jupyter\_client\restarter.py”, line 113, in poll  
self.kernel\_manager.restart\_kernel(now=True, newports=newports)  
File “C:\Users\Vaandrager\Anaconda3\lib\site-packages\jupyter\_client\manager.py”, line 368, in restart\_kernel  
self.start\_kernel(\*\*self.\_launch\_args)  
File “C:\Users\Vaandrager\Anaconda3\lib\site-packages\jupyter\_client\manager.py”, line 259, in start\_kernel  
\*\*kw)  
File “C:\Users\Vaandrager\Anaconda3\lib\site-packages\jupyter\_client\manager.py”, line 204, in \_launch\_kernel  
return launch\_kernel(kernel\_cmd, \*\*kw)  
File “C:\Users\Vaandrager\Anaconda3\lib\site-packages\jupyter\_client\launcher.py”, line 138, in launch\_kernel  
proc = Popen(cmd, \*\*kwargs)  
File “C:\Users\Vaandrager\Anaconda3\lib\subprocess.py”, line 800, in **init**  
restore\_signals, start\_new\_session)  
File “C:\Users\Vaandrager\Anaconda3\lib\subprocess.py”, line 1207, in \_execute\_child  
startupinfo)  
FileNotFoundError: [WinError 2] The system can’t find the file #originally in Dutch  
[I 09:42:00.661 NotebookApp] Saving file at /Documents/IBM/ILOG/CPLEX\_Studio\_Community129/python/examples/cp/jupyter/house\_building.ipynb

After this, I can change back to the base (Python 3) kernel which works fine. After this error the newly created anaconda environment (here python2\_env) has a whole lot of files less and also the python.exe file is then deleted/gone. I’ve tried installing kernels via nb\_conda\_kernels and downgrading the pywin32 to version 224 in the python2\_env, I have reinstalled anaconda and tried with miniconda, and I have tried creating an environment in the anaconda navigator and theninstalling jupyter notebook for this env through the interface, but nothing seems to work. I don’t think anaconda is the problem, because if I create environments for regular python scripts in pyCharm for example, they work fine, the environment gets ‘corrupted’ after trying to run .ipynb files there or if I open Jupyter Notebook.

I hope someone can help me solve this problem, thanks in advance!