Start : This command cannot be run due to the error: The system cannot find the file specified

Assign different port number manually when you start the notebook. For example:

jupyter notebook --port=8889

try:

jupyter notebook --no-browser

Update:
For some, the original answer below should still work.
For others, who get an additional error related to a tcgetpgrp failed: Not a tty message, there is no real fix at the moment. (See this issue on GitHub)
Therefore, you need to use jupyter notebook --no-browser or set c.NotebookApp.open_browser = False in the config file $HOME/.jupyter/jupyter_notebook_config.py.

Original answer:
I had the problem that Jupyter didn't find a file (complete error message in German):

Start : Dieser Befehl kann aufgrund des folgenden Fehlers nicht ausgeführt werden: Das System kann die angegebene Datei nicht finden. In Zeile:1 Zeichen:1 + Start "file:///home/nico/.local/share/jupyter/runtime/nbserver-1164-o ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [Start-Process], InvalidOperationException + FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand

Jupyter did work, but it didn't open my browser, when I typed jupyter notebook.

I found a very simple solution to this:

Create the Jupyter Config file:

jupyter notebook --generate-config

touch $HOME/.jupyter/jupyter_notebook_config.py

Now add the following line to the config file (by using nano or any other text editor):

c.NotebookApp.use_redirect_file = False

Now, my WSL uses the wslview command to open the default browser in Windows. (I think)

If wslview . does nothing, you might need to manually install wslu.

Side note:
This solution also works for jupyter lab, but you have to use c.LabApp.use_redirect_file = False in $HOME/.jupyter/jupyter_lab_config.py.
Or even better c.ServerApp.use_redirect_file = False in $HOME/.jupyter/jupyter_server_config.py.

I had similar issue with browser, I got

No web browser found: could not locate runnable browser.

I installed WSLU https://github.com/wslutilities/wslu. Then I got

Start : This command cannot be run due to the error: The system cannot find the file specified. At line:1 char:1 + Start --h + ~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [Start-Process], InvalidOperationException + FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand

jupyter-notebook does not supply url as a parameter to wlsview. It passes a path with file to browser. eg

file:///home/myhome/.local/share/jupyter/runtime/nbserver-5058-open.html

with actual url

Opening Jupyter Notebook

This page should redirect you to Jupyter Notebook. If it doesn't, click here to go to Jupyter.

Create a file jupyter-notebook-browser with a content to extract actual url

#!/bin/bash file=$(echo "$1" | sed 's/file:\/\///') url=$(grep -oP 'href="\K([^"]*localhost[^"]+)' "$file") wslview "$url"

then run jupyter-notebook --browser=jupyter-notebook-browser

or define BROWSER variable and run

export BROWSER="jupyter-notebook-browser" jupyter-notebook

Why does Start-Process fail to find the executable (not in the path) if -RedirectStandardOutput or -RedirectStandardError are specified?

I.e.

[X:\] Start-Process -FilePath "prog.exe" -WorkingDirectory (Get-Location).Path

The program starts & executes as it should. But when I add output redirection, everything falls apart:

[X:\] Start-Process -FilePath "prog.exe" -WorkingDirectory (Get-Location).Path -RedirectStandardOutput stdout.txt Start-Process: This command cannot be run due to the error: The system cannot find the file specified.

Redirecting with the 1>stdout.txt operator works as expected.

This seems not to affect programs that reside in directories listed in PATH. I cannot really figure out what's the logic here. Redirections should have nothing to do with resolving the binary path in the first place.

Running on Windows 10 Professional.

Update: Full trace & simple reproducer

PS> cat .\hello.c #include int main(int argc, char** argv) { printf("Meh\n"); getchar(); return 0; } PS> cl hello.c Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30138 for x86 Copyright (C) Microsoft Corporation. All rights reserved. hello.c Microsoft (R) Incremental Linker Version 14.29.30138.0 Copyright (C) Microsoft Corporation. All rights reserved. /out:hello.exe hello.obj PS> Start-Process -FilePath hello.exe -WorkingDirectory (Get-Location).Path PS> Start-Process -FilePath hello.exe -WorkingDirectory (Get-Location).Path -RedirectStandardOutput stdout.txt Start-Process : This command cannot be run due to the error: The system cannot find the file specified. At line:1 char:1 + Start-Process -FilePath hello.exe -WorkingDirectory (Get-Location).Pa ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [Start-Process], InvalidOperationException + FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand

Update 2:

Seems that using absolute path for the executable is a workaround for the issue. (Although it doesn't explain why output direction breaks the executable name/path resolution in the first place)

Start : This command cannot be run due to the error: The system cannot find the file specified

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