title: The Encrypt library requires the Mcrypt extension
body: <p>I have a PHP application written using the Codeigniter framework. When I am trying to run this application on Windows Machine then I am getting below error:</p>
  
  <blockquote>
    <p>An Error Was Encountered<br>
    The Encrypt library requires the Mcrypt extension. </p>
  </blockquote>
  
  <p>This same application working fine on some random Windows Machine having the same configuration. I have tried on 5 different windows 10 machines and got this error on 3 Machine and worked fine on 2 machines. Here I have used the same installer to install XAMPP on all the machines and the same code, but still don't know how to make it run smoothly.
  I have tried almost all the suggestions available online like to make a change in php.ini but no luck so far.</p>