title: pip install access denied on Windows
body: <p>I am trying to run <code>pip install mitmproxy</code> on Windows, but I keep getting access denied, even with <code>cmd</code> and <code>PowerShell</code> using the <code>Run as Administrator</code> option.</p>
  
  <pre><code>WindowsError: [Error 5] Access is denied: 'c:\\users\\bruno\\appdata\\local\\temp\\easy_install-0fme6u\\cryptography-0.9.1\\.eggs\\cffi-1.1.2-py2.7-win-amd64.egg\\_cffi_backend.pyd'
  </code></pre>
  
  <p>How can I make this work?</p>