title: Vagrant is attempting to interface with the UI in a way that requires a TTY
body: <p>Problem: vagrant up fails with the error below. I am running vagrant on Windows 7 and the base box is Ubuntu )( files.vagrantup.com/precise32.box ).</p>
  
  <p>how can it be fixed?</p>
  
  <pre><code>    vagrant.bat up
  
  Bringing machine 'default' up with 'virtualbox' provider...
  [default] Clearing any previously set forwarded ports...
  [default] Clearing any previously set network interfaces...
  [default] Available bridged network interfaces:
  1) Intel(R) PRO/1000 EB Network Connection with I/O Acceleration
  2) Intel(R) PRO/1000 PL Network Connection
  Vagrant is attempting to interface with the UI in a way that requires
  a TTY. Most actions in Vagrant that require a TTY have configuration
  switches to disable this requirement. Please do that or run Vagrant
  with TTY.
  
  Process finished with exit code 1
  </code></pre>
  
  <p>thanks</p>