title: conda update conda not working due to Windows Program Files permissions
body: <p>I installed Anaconda for Python 2.7 for all users on my Windows 10 machine. When I try to update it via <code>conda update conda</code> I get the following error: </p>
  
  <pre><code># You don't appear to have the necessary permissions to update packages
  # into the install area 'C:\Program Files\Anaconda2'.
  # However you can clone this environment into your home directory and
  # then make changes to it.
  # This may be done using the command:
  #
  # $ conda create -n my_root --clone=C:\Program Files\Anaconda2
  </code></pre>
  
  <p>Yet when I try to clone it into my home directory, I get the error: </p>
  
  <pre><code>PermissionError: [WinError 5] Access is denied: 'C:\\Program Files\\Anaconda2\\pkgs\\menuinst-1.4.1-py27_0.tmp'
  </code></pre>
  
  <p>Is there a way to solve this? I've been Googling but haven't found a clear solution. </p>