title: Timed out waiting to get a heartbeat from kernel process
body: <p>I am constantly getting this error <code>Timed out waiting to get a heartbeat from kernel process.</code> Here is the log from the python window</p>
  <pre><code>at f.waitForHeartbeat (c:\Users\Pritam Dey\.vscode\extensions\ms-python.python-2020.9.111407\out\client\extension.js:56:573516)]
  &gt; ~\AppData\Local\Programs\Python\Python38\python.exe &quot;c:\Users\Pritam Dey\.vscode\extensions\ms-python.python-2020.9.111407\pythonFiles\pyvsc-run-isolated.py&quot; -c &quot;import ipykernel&quot;
  &gt; ~\AppData\Local\Programs\Python\Python38\python.exe &quot;c:\Users\Pritam Dey\.vscode\extensions\ms-python.python-2020.9.111407\pythonFiles\pyvsc-run-isolated.py&quot; -c &quot;import ipykernel&quot;
  &gt; ~\AppData\Local\Programs\Python\Python38\python.exe &quot;c:/Users/Pritam Dey/.vscode/extensions/ms-python.python-2020.9.111407/pythonFiles/pyvsc-run-isolated.py&quot; vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v
  &gt; ~\AppData\Local\Programs\Python\Python38\python.exe &quot;c:/Users/Pritam Dey/.vscode/extensions/ms-python.python-2020.9.111407/pythonFiles/pyvsc-run-isolated.py&quot; vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v
  Error 2020-09-25 12:51:41: Failed to start the Daemon, StdErr:  C:\Users\Pritam Dey\AppData\Local\Programs\Python\Python38\python.exe: can't open file '&quot;c:/Users/Pritam Dey/.vscode/extensions/ms-python.python-2020.9.111407/pythonFiles/pyvsc-run-isolated.py&quot;': [Errno 22] Invalid argument
  
  Error 2020-09-25 12:51:41: Failed to start the Daemon, ProcEndEx [Error: Timeout waiting for daemon to start
      at Timeout._onTimeout (c:\Users\Pritam Dey\.vscode\extensions\ms-python.python-2020.9.111407\out\client\extension.js:24:225838)
      at listOnTimeout (internal/timers.js:531:17)
      at processTimers (internal/timers.js:475:7)]
  Error 2020-09-25 12:51:41: Failed  to start the Daemon, Ex [Error: Timeout waiting for daemon to start
      at Timeout._onTimeout (c:\Users\Pritam Dey\.vscode\extensions\ms-python.python-2020.9.111407\out\client\extension.js:24:225838)
      at listOnTimeout (internal/timers.js:531:17)
      at processTimers (internal/timers.js:475:7)]
  Error 2020-09-25 12:51:41: Pinging Daemon Failed, Class name = h, completed in 5008ms, has a falsy return value, Arg 1: {}, Return Value: undefined [Error: Timeout waiting for daemon to start
      at Timeout._onTimeout (c:\Users\Pritam Dey\.vscode\extensions\ms-python.python-2020.9.111407\out\client\extension.js:24:225838)
      at listOnTimeout (internal/timers.js:531:17)
      at processTimers (internal/timers.js:475:7)]
  Error 2020-09-25 12:51:41: Failed to create daemon, Class name = h, completed in 5014ms, has a falsy return value, , Return Value: undefined [Error: Timeout waiting for daemon to start
      at Timeout._onTimeout (c:\Users\Pritam Dey\.vscode\extensions\ms-python.python-2020.9.111407\out\client\extension.js:24:225838)
      at listOnTimeout (internal/timers.js:531:17)
      at processTimers (internal/timers.js:475:7)]
  Error 2020-09-25 12:51:41: Failed to create the daemon service, defaulting to activated environment [Error: Timeout waiting for daemon to start
      at Timeout._onTimeout (c:\Users\Pritam Dey\.vscode\extensions\ms-python.python-2020.9.111407\out\client\extension.js:24:225838)
      at listOnTimeout (internal/timers.js:531:17)
      at processTimers (internal/timers.js:475:7)]
  &gt; ~\AppData\Local\Programs\Python\Python38\python.exe &quot;c:/Users/Pritam Dey/.vscode/extensions/ms-python.python-2020.9.111407/pythonFiles/pyvsc-run-isolated.py&quot; ipykernel_launcher --ip=127.0.0.1 --stdin=9039 --control=9037 --hb=9036 --Session.signature_scheme=&quot;hmac-sha256&quot; --Session.key=b&quot;cfa1d651-ee81-4a31-941a-79b62c7c11f7&quot; --shell=9038 --transport=&quot;tcp&quot; --iopub=9040 --f=C:\Users\PRITAM~1\AppData\Local\Temp\tmp-13808b9cpazPt9HD1.json
  cwd: e:\study\research\e2e nlg challenge
  &gt; ~\AppData\Local\Programs\Python\Python38\python.exe &quot;c:/Users/Pritam Dey/.vscode/extensions/ms-python.python-2020.9.111407/pythonFiles/pyvsc-run-isolated.py&quot; ipykernel_launcher --ip=127.0.0.1 --stdin=9039 --control=9037 --hb=9036 --Session.signature_scheme=&quot;hmac-sha256&quot; --Session.key=b&quot;cfa1d651-ee81-4a31-941a-79b62c7c11f7&quot; --shell=9038 --transport=&quot;tcp&quot; --iopub=9040 --f=C:\Users\PRITAM~1\AppData\Local\Temp\tmp-13808b9cpazPt9HD1.json
  cwd: e:\study\research\e2e nlg challenge
  Error 2020-09-25 12:52:11: Timed out waiting to get a heartbeat from kernel process.
  Error 2020-09-25 12:52:11: Failed to connect raw kernel session: Error: Timed out waiting to get a heartbeat from kernel process.
  Error 2020-09-25 12:52:11: DataScience Error [Error: Timed out waiting to get a heartbeat from kernel process.
      at f.waitForHeartbeat (c:\Users\Pritam Dey\.vscode\extensions\ms-python.python-2020.9.111407\out\client\extension.js:56:573516)]
  
  </code></pre>
  <p>I even reinstalled vs code and jupyter lab, but even that did not help.</p>
  <p>The ipynb notebooks are working fine when I open it through <code>jupyter lab</code> in command line</p>