Existing connection error after script restart

I do HTTP requests on Python 3.7, but if I have some errors during the execution and the script stops, all new HTTP requests (even after restart the script) have the errors: [Errno 10054] An existing connection was forcibly closed by the remote host.

I have to disable/enable my network, to remove the error. It's probably due to my PC/OS because the script works on RaspberryPi but not on my Windows 10. But I don't know how to fix it.

Here the minimum code to generate the error:

import requests
import json
import urllib.request
import socket

    if __name__ == '__main__':

        params = json.dumps({"toto": "ABCD"}).encode('utf-8')

        try:
            head = {'content-type': 'application/json'}
            #replace http by https, to generate the error, re-writte http, and it will never work again
            url = 'http://www.google.com'
            with requests.post(url, data=params, headers=head) as response:
                print("All is OK: " + str(response))
        except (urllib.error.URLError, socket.timeout) as e:
            print("Error time out: " + str(e.args))
        except Exception as e:
            print("Uknown error: " + str(e.args))

Once I have the error, even pip.exe return the same error if I want to install a new module.

edit1:I tried something else:

I have another script which does only SQL requests, it works perfectly.

But once I have the error even this one has the problem: "Lost connection to MySQL server during query (%s)" % (e,)) pymysql.err.OperationalError: (2013, 'Lost connection to MySQL server during query ([WinError 10054] An existing connection was forcibly closed by the remote host)')

edit2: I installed bash on Ubuntu on Windows, and I do the same thing on the same PC but "OS different", I get ProtocolError('Connection aborted.', RemoteDisconnected('Remote end closed connection without response',))

I tried on other PC (Windows 7), same problem as mine.

from Existing connection error after script restart