Error: Timed out waiting to get a heartbeat from kernel process

[philipnye]

Applies To

• Notebooks (.ipynb files)
• Interactive Window and/or Cell Scripts (.py files with #%% markers)

What happened?

Steps taken:

• Created a fresh virtual environment using venv
• Installed three packages (flake8, ipykernel, pandas)
• Tried to run my first cell - import pandas as pd
• Received the error: 'Timed out waiting to get a heartbeat from kernel process. View Jupyter log for further details.'

My log can be found below.

The same steps worked fine yesterday.

I've tried to go through the various issues that mention Timed out waiting to get a heartbeat from kernel process and Failed to start the Daemon. Most date from 12 months ago and seem to refer to Python 3.7 or 3.8, but sorry if this is duplicating something and I've overlooked it.

VS Code Version

1.60.2

Jupyter Extension Version

v2021.8.2041215044

Jupyter logs

User belongs to experiment group 'jupyterTestcf'
User belongs to experiment group 'jupyterEnhancedDataViewer'
Info 2021-10-07 19:44:55: ZMQ install verified.
Info 2021-10-07 19:44:55: Attempting to start a server because of preload conditions ...
Info 2021-10-07 19:45:08: Starting interactive window with controller ID ms-toolsai.jupyter/.jvsc74a57bd0d2b69e0b0d41a9272b469c8b02aeb26d8b33b2f918308da8f531d00e408674ab.p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe.p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe.-m#ipykernel_launcher (Interactive)
Info 2021-10-07 19:45:08: Attempting to start a server because of preload conditions ...
Info 2021-10-07 19:45:08: Setting setActiveController for vscode-interactive:Interactive-1.interactive
Info 2021-10-07 19:45:08: Intiailize notebook communications for editor vscode-interactive:Interactive-1.interactive
Info 2021-10-07 19:45:08: Resolving notebook UI Comms (resolve) for vscode-interactive:Interactive-1.interactive
Info 2021-10-07 19:45:08: initialize CommonMessageCoordinator
Info 2021-10-07 19:45:08: IPyWidgetMessageDispatcher.initialize
Info 2021-10-07 19:45:08: Created and initailized CommonMessageCoordinator
Info 2021-10-07 19:45:08: Attach Coordinator for vscode-interactive:Interactive-1.interactive
Info 2021-10-07 19:45:08: Loading kernelspec from C:\Program Files\Python39\share\jupyter\kernels\python3\kernel.json for C:\Program Files\Python39\python.exe
Info 2021-10-07 19:45:08: Loading kernelspec from c:\Users\nyep\OneDrive - Institute for Government\Projects\Parliament API\scripts\env\share\jupyter\kernels\python3\kernel.json for c:\Users\nyep\OneDrive - Institute for Government\Projects\Parliament API\scripts\env\Scripts\python.exe
Info 2021-10-07 19:45:08: Loading kernelspec from p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\share\jupyter\kernels\python3\kernel.json for p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe
Info 2021-10-07 19:45:08: Starting Notebook in kernel.ts id = .jvsc74a57bd0d2b69e0b0d41a9272b469c8b02aeb26d8b33b2f918308da8f531d00e408674ab.p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe.p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe.-m#ipykernel_launcher
Info 2021-10-07 19:45:08: Creating raw notebook for vscode-interactive:Interactive-1.interactive
Info 2021-10-07 19:45:08: Getting preferred kernel for vscode-interactive:Interactive-1.interactive
Info 2021-10-07 19:45:08: Computing working directory vscode-interactive:Interactive-1.interactive
Info 2021-10-07 19:45:08: Hiding default kernel spec Python 3 (ipykernel), python
Info 2021-10-07 19:45:08: Kernel python397jvsc74a57bd0ac59ebe37160ed0dfa835113d9b8498d9f09ceb179beaac4002f036b9467c963 matches Python 3.9.7 64-bit based on interpreter path.
Info 2021-10-07 19:45:08: Process Execution: > C:\Program Files\Python39\python.exe -c "import notebook"
> C:\Program Files\Python39\python.exe -c "import notebook"
Info 2021-10-07 19:45:08: Process Execution: > C:\Program Files\Python39\python.exe -c "import notebook"
> C:\Program Files\Python39\python.exe -c "import notebook"
Info 2021-10-07 19:45:08: Process Execution: > C:\Program Files\Python39\python.exe -c "import jupyter"
> C:\Program Files\Python39\python.exe -c "import jupyter"
Info 2021-10-07 19:45:08: Process Execution: > C:\Program Files\Python39\python.exe -c "import jupyter"
> C:\Program Files\Python39\python.exe -c "import jupyter"
Info 2021-10-07 19:45:09: Connecting to raw session for vscode-interactive:Interactive-1.interactive with connection {"kind":"startUsingPythonInterpreter","kernelSpec":{"interpreterPath":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env\\Scripts\\python.exe","name":"python397jvsc74a57bd0d2b69e0b0d41a9272b469c8b02aeb26d8b33b2f918308da8f531d00e408674ab","argv":["python","-m","ipykernel_launcher","-f","{connection_file}"],"language":"python","path":"python","display_name":"Python 3.9.7 64-bit ('env': venv)","metadata":{"interpreter":{"sysPrefix":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env","envType":"Venv","envName":"env","envPath":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env","path":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env\\Scripts\\python.exe","architecture":3,"sysVersion":"3.9.7 (tags/v3.9.7:1016ef3, Aug 30 2021, 20:19:38) [MSC v.1929 64 bit (AMD64)]","version":{"raw":"3.9.7","major":3,"minor":9,"patch":7,"build":[],"prerelease":["final","0"]},"displayName":"Python 3.9.7 64-bit ('env': venv)"}},"env":{}},"interpreter":{"sysPrefix":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env","envType":"Venv","envName":"env","envPath":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env","path":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env\\Scripts\\python.exe","architecture":3,"sysVersion":"3.9.7 (tags/v3.9.7:1016ef3, Aug 30 2021, 20:19:38) [MSC v.1929 64 bit (AMD64)]","version":{"raw":"3.9.7","major":3,"minor":9,"patch":7,"build":[],"prerelease":["final","0"]},"displayName":"Python 3.9.7 64-bit ('env': venv)"},"id":".jvsc74a57bd0d2b69e0b0d41a9272b469c8b02aeb26d8b33b2f918308da8f531d00e408674ab.p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env\\Scripts\\python.exe.p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env\\Scripts\\python.exe.-m#ipykernel_launcher"}
Info 2021-10-07 19:45:09: Starting raw kernel Python 3.9.7 64-bit ('env': venv)
Info 2021-10-07 19:45:09: installMissingDependencies p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe
Info 2021-10-07 19:45:09: Process Execution: > C:\Program Files\Python39\python.exe -m jupyter kernelspec --version
> C:\Program Files\Python39\python.exe -m jupyter kernelspec --version
Info 2021-10-07 19:45:09: Process Execution: > C:\Program Files\Python39\python.exe -m jupyter kernelspec --version
> C:\Program Files\Python39\python.exe -m jupyter kernelspec --version
Info 2021-10-07 19:45:10: Process Execution: > p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe -m pip list
> p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe -m pip list
Info 2021-10-07 19:45:11: Process Execution: > p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe -c "import ipykernel"
> p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe -c "import ipykernel"
Info 2021-10-07 19:45:11: Creating daemon pool for C:\Program Files\Python39\python.exe with env variables count 0
Info 2021-10-07 19:45:11: Process Execution: > C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
> C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
Info 2021-10-07 19:45:11: Process Execution: > C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
> C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
Info 2021-10-07 19:45:11: Process Execution: > C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
> C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
Info 2021-10-07 19:45:11: Process Execution: > C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
> C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
Info 2021-10-07 19:45:11: Process Execution: > C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
> C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
Info 2021-10-07 19:45:11: Process Execution: > C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
> C:\Program Files\Python39\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v
Info 2021-10-07 19:45:55: Install Missing Dependencies, Class name = _, completed in 46958ms, has a falsy return value, Return Value: undefined
Info 2021-10-07 19:45:55: Kernel launching with ports 9000,9001,9002,9003,9004. Start port is 9000
Info 2021-10-07 19:45:55: Launching kernel daemon for Python 3.9.7 64-bit ('env': venv) # p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe
Info 2021-10-07 19:45:55: No custom variables for Kernel as interpreter is not conda, but is Venv
Info 2021-10-07 19:45:57: Creating daemon process for p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe with env variables count 68
Info 2021-10-07 19:45:58: Process Execution: > p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v
> p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe -m vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v
Error 2021-10-07 19:46:03: Failed to start the Daemon, StdErr:  
Error 2021-10-07 19:46:03: Failed to start the Daemon, ProcEndEx [Error: Timeout waiting for daemon to start
	at Timeout._onTimeout (c:\Users\nyep\.vscode\extensions\ms-toolsai.jupyter-2021.8.2041215044\out\client\extension.js:37:205293)
	at listOnTimeout (internal/timers.js:554:17)
	at processTimers (internal/timers.js:497:7)]
Error 2021-10-07 19:46:03: Failed  to start the Daemon, Ex [Error: Timeout waiting for daemon to start
	at Timeout._onTimeout (c:\Users\nyep\.vscode\extensions\ms-toolsai.jupyter-2021.8.2041215044\out\client\extension.js:37:205293)
	at listOnTimeout (internal/timers.js:554:17)
	at processTimers (internal/timers.js:497:7)]
Error 2021-10-07 19:46:03: Pinging Daemon Failed, Class name = d, completed in 5004ms, has a falsy return value, Arg 1: {}, Return Value: undefined [Error: Timeout waiting for daemon to start
	at Timeout._onTimeout (c:\Users\nyep\.vscode\extensions\ms-toolsai.jupyter-2021.8.2041215044\out\client\extension.js:37:205293)
	at listOnTimeout (internal/timers.js:554:17)
	at processTimers (internal/timers.js:497:7)]
Error 2021-10-07 19:46:03: Failed to create daemon, Class name = d, completed in 5638ms, has a falsy return value, , Return Value: undefined [Error: Timeout waiting for daemon to start
	at Timeout._onTimeout (c:\Users\nyep\.vscode\extensions\ms-toolsai.jupyter-2021.8.2041215044\out\client\extension.js:37:205293)
	at listOnTimeout (internal/timers.js:554:17)
	at processTimers (internal/timers.js:497:7)]
Error 2021-10-07 19:46:03: Failed to create the daemon service, defaulting to activated environment [Error: Timeout waiting for daemon to start
	at Timeout._onTimeout (c:\Users\nyep\.vscode\extensions\ms-toolsai.jupyter-2021.8.2041215044\out\client\extension.js:37:205293)
	at listOnTimeout (internal/timers.js:554:17)
	at processTimers (internal/timers.js:497:7)]
Info 2021-10-07 19:46:03: Process Execution: > p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe -m ipykernel_launcher --ip=127.0.0.1 --stdin=9003 --control=9001 --hb=9000 --Session.signature_scheme="hmac-sha256" --Session.key=b"b1222161-5318-4412-99b3-9f1be9d63e2d" --shell=9002 --transport="tcp" --iopub=9004 --f=C:\Users\nyep\AppData\Local\Temp\tmp-20884rPFL6uDjZzCf.json
> p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\env\Scripts\python.exe -m ipykernel_launcher --ip=127.0.0.1 --stdin=9003 --control=9001 --hb=9000 --Session.signature_scheme="hmac-sha256" --Session.key=b"b1222161-5318-4412-99b3-9f1be9d63e2d" --shell=9002 --transport="tcp" --iopub=9004 --f=C:\Users\nyep\AppData\Local\Temp\tmp-20884rPFL6uDjZzCf.json
Info 2021-10-07 19:46:03: Process Execution: cwd: p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data
cwd: p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data
Info 2021-10-07 19:46:03: Launching kernel daemon, Class name = f, completed in 7756ms, has a truthy return value, Arg 1: <Uri:p:\Research & Learning\Research\Data Science\Whitehall Monitor\Contracts_Data\contracts_data_import_wga.py>, Arg 2: "p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data", Arg 3: {"interpreterPath":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env\\Scripts\\python.exe","name":"python397jvsc74a57bd0d2b69e0b0d41a9272b469c8b02aeb26d8b33b2f918308da8f531d00e408674ab","argv":["python","-m","ipykernel_launcher","--ip=127.0.0.1","--stdin=9003","--control=9001","--hb=9000","--Session.signature_scheme=\"hmac-sha256\"","--Session.key=b\"b1222161-5318-4412-99b3-9f1be9d63e2d\"","--shell=9002","--transport=\"tcp\"","--iopub=9004","--f=C:\\Users\\nyep\\AppData\\Local\\Temp\\tmp-20884rPFL6uDjZzCf.json"],"language":"python","path":"python","display_name":"Python 3.9.7 64-bit ('env': venv)","metadata":{"interpreter":{"sysPrefix":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env","envType":"Venv","envName":"env","envPath":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env","path":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env\\Scripts\\python.exe","architecture":3,"sysVersion":"3.9.7 (tags/v3.9.7:1016ef3, Aug 30 2021, 20:19:38) [MSC v.1929 64 bit (AMD64)]","version":{"raw":"3.9.7","major":3,"minor":9,"patch":7,"build":[],"prerelease":["final","0"]},"displayName":"Python 3.9.7 64-bit ('env': venv)"}},"env":{}}, Arg 4: {"sysPrefix":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env","envType":"Venv","envName":"env","envPath":"p:\\Research & Learning\\Research\\Data Science\\Whitehall Monitor\\Contracts_Data\\env","path":"p:\\Research & Learning\\Research\\Data Science\\Whitehall 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Error: Timed out waiting to get a heartbeat from kernel process. 
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### Coding Language and Runtime Version

python 3.9.7 64-bit

### Language Extension Version (if applicable)

_No response_

### Anaconda Version (if applicable)

N/a

### Running Jupyter locally or remotely?

Local

[DonJayamanne]

@philipnye
Thanks for filing this issue, and sorry you are running into this.
Please could you try to install VS Code insiders and test this out. Its possible it was fixed along with the fix for #7334
The new release of Jupyter will be available tomorrow in VS Code insiders, please do try it out.

[philipnye]

Thanks @DonJayamanne. Since posting this I've updated to VSCode 1.61.0 and, for now at least, am not getting the issue any more.