An error ocurred while starting the kernel

[analyticssolvers]

What steps will reproduce the problem?

An error ocurred while starting the kernel
Traceback (most recent call last):
File "C:\Users\Martin\anaconda3\envs\spyder‑env\lib\runpy.py", line 197, in _run_module_as_main
return _run_code(code, main_globals, None,
File "C:\Users\Martin\anaconda3\envs\spyder‑env\lib\runpy.py", line 87, in run_code
exec(code, run_globals)
File "C:\Users\Martin\anaconda3\envs\spyder‑env\lib\site‑packages\spyder_kernels\console_main.py", line 23, in
start.main()
File "C:\Users\Martin\anaconda3\envs\spyder‑env\lib\site‑packages\spyder_kernels\console\start.py", line 316, in main
kernel.initialize()
File "C:\Users\Martin\anaconda3\envs\spyder‑env\lib\site‑packages\traitlets\config\application.py", line 88, in inner
return method(app, *args, **kwargs)
File "C:\Users\Martin\anaconda3\envs\spyder‑env\lib\site‑packages\ipykernel\kernelapp.py", line 632, in initialize
self.init_sockets()
File "C:\Users\Martin\anaconda3\envs\spyder‑env\lib\site‑packages\ipykernel\kernelapp.py", line 282, in init_sockets
self.shell_port = self._bind_socket(self.shell_socket, self.shell_port)
File "C:\Users\Martin\anaconda3\envs\spyder‑env\lib\site‑packages\ipykernel\kernelapp.py", line 229, in _bind_socket
return self._try_bind_socket(s, port)
File "C:\Users\Martin\anaconda3\envs\spyder‑env\lib\site‑packages\ipykernel\kernelapp.py", line 205, in _try_bind_socket
s.bind("tcp://%s:%i" % (self.ip, port))
File "C:\Users\Martin\anaconda3\envs\spyder‑env\lib\site‑packages\zmq\sugar\socket.py", line 214, 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

• Spyder version: 5.1.5 None
• Python version: 3.9.7 64-bit
• Qt version: 5.9.7
• PyQt5 version: 5.9.2
• Operating System: Windows 10

Mandatory:

atomicwrites >=1.2.0 : 1.4.0 (OK)
chardet >=2.0.0 : 4.0.0 (OK)
cloudpickle >=0.5.0 : 2.0.0 (OK)
cookiecutter >=1.6.0 : 1.7.2 (OK)
diff_match_patch >=20181111 : 20200713 (OK)
intervaltree >=3.0.2 : 3.1.0 (OK)
IPython >=7.6.0 : 7.29.0 (OK)
jedi >=0.17.2;<0.19.0 : 0.18.0 (OK)
jsonschema >=3.2.0 : 3.2.0 (OK)
keyring >=17.0.0 : 23.1.0 (OK)
nbconvert >=4.0 : 6.1.0 (OK)
numpydoc >=0.6.0 : 1.1.0 (OK)
paramiko >=2.4.0 : 2.7.2 (OK)
parso >=0.7.0;<0.9.0 : 0.8.2 (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 : 2.10.0 (OK)
pylint >=2.5.0;<2.10.0 : 2.9.6 (OK)
pyls_spyder >=0.4.0 : 0.4.0 (OK)
pylsp >=1.2.2;<1.3.0 : 1.2.4 (OK)
pylsp_black >=1.0.0 : None (OK)
qdarkstyle =3.0.2 : 3.0.2 (OK)
qstylizer >=0.1.10 : 0.1.10 (OK)
qtawesome >=1.0.2 : 1.0.2 (OK)
qtconsole >=5.1.0 : 5.1.1 (OK)
qtpy >=1.5.0 : 1.10.0 (OK)
rtree >=0.9.7 : 0.9.7 (OK)
setuptools >=49.6.0 : 58.0.4 (OK)
sphinx >=0.6.6 : 4.2.0 (OK)
spyder_kernels >=2.1.1;<2.2.0 : 2.1.3 (OK)
textdistance >=4.2.0 : 4.2.1 (OK)
three_merge >=0.1.1 : 0.1.1 (OK)
watchdog >=0.10.3 : 2.1.3 (OK)
zmq >=17 : 22.2.1 (OK)

Optional:

cython >=0.21 : 0.29.24 (OK)
matplotlib >=2.0.0 : 3.4.3 (OK)
numpy >=1.7 : 1.20.3 (OK)
pandas >=1.1.1 : 1.3.4 (OK)
scipy >=0.17.0 : 1.7.1 (OK)
sympy >=0.7.3 : 1.9 (OK)

[ccordoba12]

Hey @analyticssolvers, thanks for reporting. This is a duplicate of issue #14739, to which you are subscribed so you know it's already solved.

The fix will be part of our next version (5.2.2), to be released in a couple of weeks. In the meantime, please do not open more duplicates of the same problem. Thanks!