IPython console stuck in "connecting to kernel"

Issue Report Checklist

• Searched the issues page for similar reports
• Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• Could not reproduce inside jupyter qtconsole (if console-related)
• Tried basic troubleshooting (if a bug/error)
  • Restarted Spyder
  • Reset preferences with spyder --reset
  • Reinstalled the latest version of Anaconda
  • Tried the other applicable steps from the Troubleshooting Guide
• Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

When I start Spyder from Anaconda3 or directly from Windows Menu I find the console stuck with “Connecting to kernal…” message. I can connect using “Connect to an existing kernel”–> Browse–> {selecting the kernel} and it opens in another ipython console

What steps reproduce the problem?

1. Open Spyder (3.3.6) on Win10 menu/ Open Spyder (3.3.6) thru Anaconda navigator (Anaconda3)

What is the expected output? What do you see instead?

Console 1/A stuck with “Connecting to kernel…” status

Paste Traceback/Error Below (if applicable)

Spyder Internal Console

This console is used to report application
internal errors and to inspect Spyder
internals with the following commands:
  spy.app, spy.window, dir(spy)

Please don't use it to run your code

>>> WARNING:traitlets:kernel died: 18.000179767608643

Versions

• Spyder version: 3.3.6
• Python version: 3.7
• Qt version: 5.9.7
• PyQt version: 5.9.2
• Operating System name/version: Win10 Pro, x64

Dependencies

IPython >=4.0     :  7.6.1 (OK)
cython >=0.21     :  None (NOK)
jedi >=0.9.0      :  0.13.3 (OK)
matplotlib >=2.0.0:  None (NOK)
nbconvert >=4.0   :  5.5.0 (OK)
numpy >=1.7       :  None (NOK)
pandas >=0.13.1   :  None (NOK)
pycodestyle >=2.3 :  2.5.0 (OK)
pyflakes >=0.6.0  :  2.1.1 (OK)
pygments >=2.0    :  2.4.2 (OK)
pylint >=0.25     :  2.3.1 (OK)
qtconsole >=4.2.0 :  4.5.1 (OK)
rope >=0.9.4      :  0.14.0 (OK)
sphinx >=0.6.6    :  2.1.2 (OK)
sympy >=0.7.3     :  None (NOK)

[tanmoy7863]

please uninstall your antivirus…I have faced the similar issue and by uninstalling the antivirus now spyder is working.

[ccordoba12]

@Tim-K-DFW, thanks for your kind words! Please wait until we release our next version (4.1.0) in a couple of weeks, which comes with some fixes that could help in this case.

And please also open another issue to track your problem because this one is closed.