Kernel error after updating Spyder in anaconda

user_10492113 0
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I updated Spyder to version 4.1.0 (together with all other packages in anaconda). Spyder itself works fine however the kernel is not working. I get the following error and can't figure out how to solve it: 

An error ocurred while starting the kernel
The error is:

Traceback (most recent call last):
File "C:\Users\20172010\AppData\Local\Continuum\anaconda3\lib\site‑packages\spyder\plugins\ipythonconsole\plugin.py", line 1209, in create_kernel_manager_and_kernel_client
kernel_manager.start_kernel(stderr=stderr_handle, **kwargs)
File "C:\Users\20172010\AppData\Local\Continuum\anaconda3\lib\site‑packages\jupyter_client\manager.py", line 267, in start_kernel
self.kernel = self._launch_kernel(kernel_cmd, env=env, **kw)
File "C:\Users\20172010\AppData\Local\Continuum\anaconda3\lib\site‑packages\jupyter_client\manager.py", line 211, in _launch_kernel
return launch_kernel(kernel_cmd, **kw)
File "C:\Users\20172010\AppData\Local\Continuum\anaconda3\lib\site‑packages\jupyter_client\launcher.py", line 135, in launch_kernel
proc = Popen(cmd, **kwargs)
File "C:\Users\20172010\AppData\Local\Continuum\anaconda3\lib\subprocess.py", line 800, in __init__
restore_signals, start_new_session)
File "C:\Users\20172010\AppData\Local\Continuum\anaconda3\lib\subprocess.py", line 1207, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified
anaconda spyder kernel python-3.x python
3 Answers

I had the very same issue, I started Spyder using Anaconda Navigator instead of calling only Spider (desktop icon) and it worked.

Somehow the logic calling Spyder outside Anaconda Navigator misses something Anaconda Navigator doesn´t.

user_119856230

So somehow if i start Spyder graphically from the anaconda menu it works (which solves the problem).

user_104921130

In the link below is mentioned that they are working to roll out spyder 4.1.1 asap.

In the meantime you have two options:

  • run spyder 4.1.0 via the Navigator or prompt (as mentioned earlier)
  • perform a rollback to 4.0.1 in the navigator

Link: https://github.com/spyder-ide/spyder/issues/11819

user_130868210
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