Notebook: "Kernel busy" or "no connection to kernel"

[ZaRaSm]

Hello,
I installed python 3.6 (32 bit) , Anaconda 3 (64 bit) on Win 7 (64 bit ).
I run the Jupiter notebook on anaconda but the only thing that happen is appearing [*] near the code lines and I can see the error "Kernel busy" or "no connection to kernel".

Could you please let me know, how can I fix it ? Thank you

[takluyver]

Are there any error messages in the command prompt when you're running Jupyter?

[ZaRaSm]

This is my Anaconda Promt when I am running Jupyter.

[takluyver]

😕 there's nothing obviously wrong there. How about in the browser's Javascript console?

[ZaRaSm]

This is the Error that appears in the console ! :(

[takluyver]

Hmm, that doesn't give many clues either. Do you have some kind of internet security software on your computer? Some kinds of security software have caused problems for the notebook before.

[ZaRaSm]

Yes, I have ESET Internet Security. I have tried to run Anaconda while my internet security software is disabled, but I still have problem with it :( !

[takluyver]

Try switching localhost in the URL with 127.0.0.1 - sometimes that gets
round some security block. But I'm running out of ideas to suggest.

On 2 Nov 2017 6:37 p.m., "ZaRaSm" [e-mail] wrote:

Yes, I have ESET Internet Security. I have tried to run Anaconda while my
internet security software is disabled, but I still have problem with it :(
!

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[ZaRaSm]

I very appreciate for your help. I try it but it doesn't work!

[nash5]

Even I had this bug for many days. I tried several methods but neither worked.

The only solution I found was by resetting the system(I took a backup of most wanted apps) and install the application.

Obviously it works!

[ZaRaSm]

I was too lazy to resetting my system , so I bought a new laptop and my problem fixed ! :D

[392781]

Wonderful solutions. Unfortunately buying a new laptop is not an option for me. Any fixes here? I cannot connect to kernel either. Have the exact same symptoms as well.

[kevin-bates]

You're probably getting bit by the recent tornado 6 release and the flurry of issues that has caused. Try downgrading tornado (if you find you're using 6).

[392781]

@kevin-bates thanks, downgrading to tornado 5.1.1 fixed it. Funny to see an update on tornado wrecking havoc ;^)

[petrwaldauf]

@kevin-bates thanks, downgrading to tornado 5.1.1 fixed it. Funny to see an update on tornado wrecking havoc ;^)

Thank you Kevin this fixed it!!!!

[AnakTeka]

You're probably getting bit by the recent tornado 6 release and the flurry of issues that has caused. Try downgrading tornado (if you find you're using 6).

Thank you for the suggestion, I'm having the same problem and downgrading tornado fixed the problem

[Yaroslav00]

Thank you a lot for this suggestion

[LeithanK]

Thanks @kevin-bates !
pip install tornado==5.1.1 fixed this.

[nastushan]

I still have the same problem, downgrading tornado didn't fix it. Help me please ;(
Do you have any other suggestions?

[392781]

@ana1239 Any errors happening in terminal?

[nastushan]

@ana1239 Any errors happening in terminal?

everything works fine exept for the kernel

[392781]

Maybe try reinstalling it in a separate virtual environment? See if it works by itself then add modules as you go.

[mhghodsi]

Thanks @kevin-bates !
pip install tornado==5.1.1 fixed this.

wow! This solved my problem. Thank you!

[rsuraparaju]

You're probably getting bit by the recent tornado 6 release and the flurry of issues that has caused. Try downgrading tornado (if you find you're using 6).

Thanks Kevin! This worked.

[deepchatterjeevns]

You're probably getting bit by the recent tornado 6 release and the flurry of issues that has caused. Try downgrading tornado (if you find you're using 6).

Thanks, @kevin-bates! It worked.

[sanjaykumardabli]

How to download tornado

On Tue, 3 Sep, 2019, 1:00 PM Deep Chatterjee, [e-mail]
wrote:

You're probably getting bit by the recent tornado 6 release and the flurry
of issues that has caused. Try downgrading tornado (if you find you're
using 6).

Thanks, @kevin-bates https://github.com/kevin-bates! It worked.

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[nani-samireddy]

Kernel does not exist: b41f0b9f-e2dd-4a72-94f1-b1cdfc061c86
after the above solution also int is not working to me
like above errors
and this is the full log
[I 14:12:36.081 NotebookApp] JupyterLab extension loaded from C:\ProgramData\Anaconda3\lib\site-packages\jupyterlab
[I 14:12:36.081 NotebookApp] JupyterLab application directory is C:\ProgramData\Anaconda3\share\jupyter\lab
[I 14:12:36.645 NotebookApp] Serving notebooks from local directory: C:\Users\NANI
[I 14:12:36.653 NotebookApp] The Jupyter Notebook is running at:
[I 14:12:36.653 NotebookApp] http://localhost:8889/?token=19e4cb4a419a4dc8a79f175ad4c6f2d2ba43a722664afc6c
[I 14:12:36.653 NotebookApp] or http://127.0.0.1:8889/?token=19e4cb4a419a4dc8a79f175ad4c6f2d2ba43a722664afc6c
[I 14:12:36.653 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 14:12:36.877 NotebookApp]

To access the notebook, open this file in a browser:
    file:///C:/Users/NANI/AppData/Roaming/jupyter/runtime/nbserver-1092-open.html
Or copy and paste one of these URLs:
    http://localhost:8889/?token=19e4cb4a419a4dc8a79f175ad4c6f2d2ba43a722664afc6c
 or http://127.0.0.1:8889/?token=19e4cb4a419a4dc8a79f175ad4c6f2d2ba43a722664afc6c

[I 14:12:58.999 NotebookApp] Kernel started: b41f0b9f-e2dd-4a72-94f1-b1cdfc061c86
Traceback (most recent call last):
File "C:\ProgramData\Anaconda3\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\ProgramData\Anaconda3\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel_launcher.py", line 16, in
app.launch_new_instance()
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\application.py", line 663, in launch_instance
app.initialize(argv)
File "", line 2, in initialize
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\application.py", line 87, in catch_config_error
return method(app, args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 562, in initialize
self.init_kernel()
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 447, in init_kernel
user_ns=self.user_ns,
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\ipkernel.py", line 68, in __init__
kernel = self,
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 687, in __init__
self.init_magics()
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\zmqshell.py", line 593, in init_magics
super(ZMQInteractiveShell, self).init_magics()
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2250, in init_magics
m.PylabMagics, m.ScriptMagics,
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\magic.py", line 405, in register
m = m(shell=self.shell)
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\magics\osm.py", line 52, in __init__
self.execre = re.compile(r'(.).(%s)$' % winext,re.IGNORECASE)
File "C:\ProgramData\Anaconda3\lib\re.py", line 234, in compile
return _compile(pattern, flags)
File "C:\ProgramData\Anaconda3\lib\re.py", line 286, in _compile
p = sre_compile.compile(pattern, flags)
File "C:\ProgramData\Anaconda3\lib\sre_compile.py", line 764, in compile
p = sre_parse.parse(p, flags)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 924, in parse
p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 420, in _parse_sub
not nested and not items))
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 810, in _parse
p = _parse_sub(source, state, sub_verbose, nested + 1)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 420, in _parse_sub
not nested and not items))
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 501, in _parse
code = _escape(source, this, state)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 369, in _escape
raise source.error("incomplete escape %s" % escape, len(escape))
re.error: incomplete escape \U at position 52
[I 14:13:01.966 NotebookApp] KernelRestarter: restarting kernel (1/5), new random ports
Traceback (most recent call last):
File "C:\ProgramData\Anaconda3\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\ProgramData\Anaconda3\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel_launcher.py", line 16, in
app.launch_new_instance()
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\application.py", line 663, in launch_instance
app.initialize(argv)
File "", line 2, in initialize
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\application.py", line 87, in catch_config_error
return method(app, *args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 562, in initialize
self.init_kernel()
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 447, in init_kernel
user_ns=self.user_ns,
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\ipkernel.py", line 68, in __init__
kernel = self,
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 687, in __init__
self.init_magics()
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\zmqshell.py", line 593, in init_magics
super(ZMQInteractiveShell, self).init_magics()
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2250, in init_magics
m.PylabMagics, m.ScriptMagics,
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\magic.py", line 405, in register
m = m(shell=self.shell)
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\magics\osm.py", line 52, in __init__
self.execre = re.compile(r'(.).(%s)$' % winext,re.IGNORECASE)
File "C:\ProgramData\Anaconda3\lib\re.py", line 234, in compile
return _compile(pattern, flags)
File "C:\ProgramData\Anaconda3\lib\re.py", line 286, in _compile
p = sre_compile.compile(pattern, flags)
File "C:\ProgramData\Anaconda3\lib\sre_compile.py", line 764, in compile
p = sre_parse.parse(p, flags)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 924, in parse
p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 420, in _parse_sub
not nested and not items))
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 810, in _parse
p = _parse_sub(source, state, sub_verbose, nested + 1)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 420, in _parse_sub
not nested and not items))
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 501, in _parse
code = _escape(source, this, state)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 369, in _escape
raise source.error("incomplete escape %s" % escape, len(escape))
re.error: incomplete escape \U at position 52
[I 14:13:05.004 NotebookApp] KernelRestarter: restarting kernel (2/5), new random ports
Traceback (most recent call last):
File "C:\ProgramData\Anaconda3\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\ProgramData\Anaconda3\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel_launcher.py", line 16, in
app.launch_new_instance()
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\application.py", line 663, in launch_instance
app.initialize(argv)
File "", line 2, in initialize
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\application.py", line 87, in catch_config_error
return method(app, *args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 562, in initialize
self.init_kernel()
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 447, in init_kernel
user_ns=self.user_ns,
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\ipkernel.py", line 68, in __init__
kernel = self,
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 687, in __init__
self.init_magics()
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\zmqshell.py", line 593, in init_magics
super(ZMQInteractiveShell, self).init_magics()
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2250, in init_magics
m.PylabMagics, m.ScriptMagics,
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\magic.py", line 405, in register
m = m(shell=self.shell)
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\magics\osm.py", line 52, in __init__
self.execre = re.compile(r'(.).(%s)$' % winext,re.IGNORECASE)
File "C:\ProgramData\Anaconda3\lib\re.py", line 234, in compile
return _compile(pattern, flags)
File "C:\ProgramData\Anaconda3\lib\re.py", line 286, in _compile
p = sre_compile.compile(pattern, flags)
File "C:\ProgramData\Anaconda3\lib\sre_compile.py", line 764, in compile
p = sre_parse.parse(p, flags)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 924, in parse
p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 420, in _parse_sub
not nested and not items))
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 810, in _parse
p = _parse_sub(source, state, sub_verbose, nested + 1)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 420, in _parse_sub
not nested and not items))
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 501, in _parse
code = _escape(source, this, state)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 369, in _escape
raise source.error("incomplete escape %s" % escape, len(escape))
re.error: incomplete escape \U at position 52
[I 14:13:08.048 NotebookApp] KernelRestarter: restarting kernel (3/5), new random ports
Traceback (most recent call last):
File "C:\ProgramData\Anaconda3\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\ProgramData\Anaconda3\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel_launcher.py", line 16, in
app.launch_new_instance()
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\application.py", line 663, in launch_instance
app.initialize(argv)
File "", line 2, in initialize
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\application.py", line 87, in catch_config_error
return method(app, *args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 562, in initialize
self.init_kernel()
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 447, in init_kernel
user_ns=self.user_ns,
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\ipkernel.py", line 68, in __init__
kernel = self,
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 687, in __init__
self.init_magics()
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\zmqshell.py", line 593, in init_magics
super(ZMQInteractiveShell, self).init_magics()
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2250, in init_magics
m.PylabMagics, m.ScriptMagics,
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\magic.py", line 405, in register
m = m(shell=self.shell)
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\magics\osm.py", line 52, in __init__
self.execre = re.compile(r'(.).(%s)$' % winext,re.IGNORECASE)
File "C:\ProgramData\Anaconda3\lib\re.py", line 234, in compile
return _compile(pattern, flags)
File "C:\ProgramData\Anaconda3\lib\re.py", line 286, in _compile
p = sre_compile.compile(pattern, flags)
File "C:\ProgramData\Anaconda3\lib\sre_compile.py", line 764, in compile
p = sre_parse.parse(p, flags)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 924, in parse
p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 420, in _parse_sub
not nested and not items))
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 810, in _parse
p = _parse_sub(source, state, sub_verbose, nested + 1)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 420, in _parse_sub
not nested and not items))
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 501, in _parse
code = _escape(source, this, state)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 369, in _escape
raise source.error("incomplete escape %s" % escape, len(escape))
re.error: incomplete escape \U at position 52
[I 14:13:11.089 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports
Traceback (most recent call last):
File "C:\ProgramData\Anaconda3\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\ProgramData\Anaconda3\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel_launcher.py", line 16, in
app.launch_new_instance()
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\application.py", line 663, in launch_instance
app.initialize(argv)
File "", line 2, in initialize
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\application.py", line 87, in catch_config_error
return method(app, *args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 562, in initialize
self.init_kernel()
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 447, in init_kernel
user_ns=self.user_ns,
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\ipkernel.py", line 68, in __init__
kernel = self,
File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(args, *kwargs)
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 687, in __init__
self.init_magics()
File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\zmqshell.py", line 593, in init_magics
super(ZMQInteractiveShell, self).init_magics()
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2250, in init_magics
m.PylabMagics, m.ScriptMagics,
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\magic.py", line 405, in register
m = m(shell=self.shell)
File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\magics\osm.py", line 52, in __init__
self.execre = re.compile(r'(.*).(%s)$' % winext,re.IGNORECASE)
File "C:\ProgramData\Anaconda3\lib\re.py", line 234, in compile
return _compile(pattern, flags)
File "C:\ProgramData\Anaconda3\lib\re.py", line 286, in _compile
p = sre_compile.compile(pattern, flags)
File "C:\ProgramData\Anaconda3\lib\sre_compile.py", line 764, in compile
p = sre_parse.parse(p, flags)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 924, in parse
p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 420, in _parse_sub
not nested and not items))
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 810, in _parse
p = _parse_sub(source, state, sub_verbose, nested + 1)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 420, in _parse_sub
not nested and not items))
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 501, in _parse
code = _escape(source, this, state)
File "C:\ProgramData\Anaconda3\lib\sre_parse.py", line 369, in _escape
raise source.error("incomplete escape %s" % escape, len(escape))
re.error: incomplete escape \U at position 52
[W 14:13:14.114 NotebookApp] KernelRestarter: restart failed
[W 14:13:14.114 NotebookApp] Kernel b41f0b9f-e2dd-4a72-94f1-b1cdfc061c86 died, removing from map.
[W 14:13:59.084 NotebookApp] Timeout waiting for kernel_info reply from b41f0b9f-e2dd-4a72-94f1-b1cdfc061c86
[E 14:13:59.084 NotebookApp] Error opening stream: HTTP 404: Not Found (Kernel does not exist: b41f0b9f-e2dd-4a72-94f1-b1cdfc061c86)
[W 14:14:00.142 NotebookApp] 404 GET /api/kernels/b41f0b9f-e2dd-4a72-94f1-b1cdfc061c86/channels?session_id=c0d76dd1f83349d287576e3d1bee99fd (::1): Kernel does not exist: b41f0b9f-e2dd-4a72-94f1-b1cdfc061c86
[W 14:14:00.174 NotebookApp] 404 GET /api/kernels/b41f0b9f-e2dd-4a72-94f1-b1cdfc061c86/channels?session_id=c0d76dd1f83349d287576e3d1bee99fd (::1) 39.98ms referer=None
[W 14:14:02.214 NotebookApp] Replacing stale connection: b41f0b9f-e2dd-4a72-94f1-b1cdfc061c86:c0d76dd1f83349d287576e3d1bee99fd

help me with this

[kevin-bates]

Hi @nani-samireddy - this is coming from the ipykernel startup sequence and not an issue for this repository. However, looking at the applicable code it appears to be trying to decipher the value of your PATHEXT environment variable and I suggest following the instructions starting with this comment.

Should there be nothing obvious from examining the value of PATHEXT, I suggest opening an issue in the IPython repo duplicating the contents of your comment above.