Unable to restart kernel, zmq.error.ZMQError: Address in use

[deMalmazet]

Description

What steps will reproduce the problem?

start spyder ide
restart kernel
errors appear
windows firewall is off

Versions

• Spyder version: 4.2.4
• Python version: 3.7.9
• Qt version: 5.12.10
• PyQt5 version: 5.12.3
• Operating System: Windows 10

Dependencies

# Mandatory:
atomicwrites >=1.2.0            :  1.4.0 (OK)
chardet >=2.0.0                 :  4.0.0 (OK)
cloudpickle >=0.5.0             :  1.6.0 (OK)
diff_match_patch >=20181111     :  20200713 (OK)
intervaltree                    :  None (OK)
IPython >=7.6.0                 :  7.21.0 (OK)
jedi =0.17.2                    :  0.17.2 (OK)
jsonschema >=3.2.0              :  3.2.0 (OK)
keyring >=17.0.0                :  23.0.0 (OK)
nbconvert >=4.0                 :  6.0.7 (OK)
numpydoc >=0.6.0                :  1.1.0 (OK)
paramiko >=2.4.0                :  2.7.2 (OK)
parso =0.7.0                    :  0.7.0 (OK)
pexpect >=4.4.0                 :  4.8.0 (OK)
pickleshare >=0.4               :  0.7.5 (OK)
psutil >=5.3                    :  5.8.0 (OK)
pygments >=2.0                  :  2.8.1 (OK)
pylint >=1.0                    :  2.7.2 (OK)
pyls >=0.36.2;<1.0.0            :  0.36.2 (OK)
pyls_black >=0.4.6              :  0.4.6 (OK)
pyls_spyder >=0.3.2             :  0.3.2 (OK)
qdarkstyle >=2.8;<3.0           :  2.8.1 (OK)
qtawesome >=0.5.7               :  1.0.2 (OK)
qtconsole >=5.0.3               :  5.0.3 (OK)
qtpy >=1.5.0                    :  1.9.0 (OK)
rtree >=0.8.3                   :  0.9.4 (OK)
setuptools >=39.0.0             :  54.1.2 (OK)
sphinx >=0.6.6                  :  3.5.2 (OK)
spyder_kernels >=1.10.2;<1.11.0 :  1.10.2 (OK)
textdistance >=4.2.0            :  4.2.1 (OK)
three_merge >=0.1.1             :  0.1.1 (OK)
watchdog                        :  1.0.2 (OK)
zmq >=17                        :  22.0.3 (OK)

# Optional:
cython >=0.21                   :  0.29.22 (OK)
matplotlib >=2.0.0              :  3.3.4 (OK)
numpy >=1.7                     :  1.19.3 (OK)
pandas >=1.1.1                  :  1.2.3 (OK)
scipy >=0.17.0                  :  1.6.1 (OK)
sympy >=0.7.3                   :  1.7.1 (OK)

[deMalmazet]

here is the error code I receive

An error ocurred while starting the kernel

Traceback (most recent call last):
File "C:\Users\Daniel\anaconda3\envs\TrackPlat\lib\runpy.py", line 197, in _run_module_as_main
return _run_code(code, main_globals, None,
File "C:\Users\Daniel\anaconda3\envs\TrackPlat\lib\runpy.py", line 87, in run_code
exec(code, run_globals)
File "C:\Users\Daniel\anaconda3\envs\TrackPlat\lib\site‑packages\spyder_kernels\console_main.py", line 23, in
start.main()
File "C:\Users\Daniel\anaconda3\envs\TrackPlat\lib\site‑packages\spyder_kernels\console\start.py", line 284, in main
kernel.initialize()
File "C:\Users\Daniel\anaconda3\envs\TrackPlat\lib\site‑packages\traitlets\config\application.py", line 87, in inner
return method(app, *args, **kwargs)
File "C:\Users\Daniel\anaconda3\envs\TrackPlat\lib\site‑packages\ipykernel\kernelapp.py", line 567, in initialize
self.init_sockets()
File "C:\Users\Daniel\anaconda3\envs\TrackPlat\lib\site‑packages\ipykernel\kernelapp.py", line 271, in init_sockets
self.shell_port = self._bind_socket(self.shell_socket, self.shell_port)
File "C:\Users\Daniel\anaconda3\envs\TrackPlat\lib\site‑packages\ipykernel\kernelapp.py", line 218, in _bind_socket
return self._try_bind_socket(s, port)
File "C:\Users\Daniel\anaconda3\envs\TrackPlat\lib\site‑packages\ipykernel\kernelapp.py", line 194, in _try_bind_socket
s.bind("tcp://%s:%i" % (self.ip, port))
File "C:\Users\Daniel\anaconda3\envs\TrackPlat\lib\site‑packages\zmq\sugar\socket.py", line 172, in bind
super().bind(addr)
File "zmq/backend/cython/socket.pyx", line 540, in zmq.backend.cython.socket.Socket.bind
File "zmq/backend/cython/checkrc.pxd", line 28, in zmq.backend.cython.checkrc._check_rc
zmq.error.ZMQError: Address in use

[steff456]

Hi @deMalmazet,

This seems to be a duplicate of #14739 please post your issue on that thread if the current discussion doesn't fix it.

Thanks for reporting!