title: PermissionError (WinError 31) A device attached to the system is not functioning
body: <p>I am trying to install pip by <code>python get-pip.py</code> command on my python3.6 virtualenv but i get the error:</p>
  
  <pre><code>(myvenv_python3) C:\Users\Kaleab\Downloads&gt;python get-pip.py --trusted-host=pypi
  .org
  Collecting pip
    Downloading https://files.pythonhosted.org/packages/0f/74/ecd13431bcc456ed390b
  44c8a6e917c1820365cbebcb6a8974d1cd045ab4/pip-10.0.1-py2.py3-none-any.whl (1.3MB)
  
  Could not install packages due to an EnvironmentError: [WinError 31] A device at
  tached to the system is not functioning
  Consider using the `--user` option or check the permissions.
  
  Exception ignored in: &lt;_io.TextIOWrapper name='&lt;stdout&gt;' mode='w' encoding='utf-
  8'&gt;
  PermissionError: [WinError 31] A device attached to the system is not functionin
  g
  
  (myvenv_python3) C:\Users\Kaleab\Downloads&gt;
  </code></pre>
  
  <p>What solution would you recommend? I am using Windows 8.1 machine.</p>