title: WinError 10061 - No Connection Could be made
body: <p>I'm debugging a simple program, that has worked in the past. I've singled out the instruction where the error takes place, but I cannot figure out what triggers it. I've read all questions related to WinError 10061, but I do not see a clear answer</p>
  
  <pre><code>urllib.request.urlopen('http://www.wikipedia.org/')
  Traceback (most recent call last):
  File "C:\Python33\lib\urllib\request.py", line 1248, in do_open    h.request(req.get_method(), req.selector, req.data, headers)
  File "C:\Python33\lib\http\client.py", line 1061, in request    self._send_request(method, url, body, headers)
  File "C:\Python33\lib\http\client.py", line 1099, in _send_request    self.endheaders(body)
  File "C:\Python33\lib\http\client.py", line 1057, in endheaders  self._send_output(message_body)
  File "C:\Python33\lib\http\client.py", line 902, in _send_output    self.send(msg)
  File "C:\Python33\lib\http\client.py", line 840, in send    self.connect()
  File "C:\Python33\lib\http\client.py", line 818, in connect    self.timeout, self.source_address)
  File "C:\Python33\lib\socket.py", line 435, in create_connection    raise err
  File "C:\Python33\lib\socket.py", line 426, in create_connection    sock.connect(sa)
  ConnectionRefusedError: [WinError 10061] No connection could be made because the target machine actively refused it
  
  During handling of the above exception, another exception occurred: 
  
  Traceback (most recent call last):
  File "&lt;pyshell#7&gt;", line 1, in &lt;module&gt;
  urllib.request.urlopen('http://www.wikipedia.org/')
  File "C:\Python33\lib\urllib\request.py", line 156, in urlopen   return opener.open(url, data, timeout)
  File "C:\Python33\lib\urllib\request.py", line 469, in open    response = self._open(req, data)
  File "C:\Python33\lib\urllib\request.py", line 487, in _open    '_open', req)
  File "C:\Python33\lib\urllib\request.py", line 447, in _call_chain    result = func(*args)
  File "C:\Python33\lib\urllib\request.py", line 1268, in http_open    return self.do_open(http.client.HTTPConnection, req)
  File "C:\Python33\lib\urllib\request.py", line 1251, in do_open    raise URLError(err)
  urllib.error.URLError: &lt;urlopen error [WinError 10061] No connection could be made because the target machine actively refused it&gt;
  </code></pre>
  
  <p>I run Python 3 in Windows 8. I tried turning off the firewall, as a couple of people suggested, but nothing changes. I also tried to add Python to the list of Apps allowed by the firewall. By the way the program line worked without any problem until a few days ago, when I deleted a few Apps from my PC.</p>