title: Http request refused on Windows environment but not on OSX (mac)
body: <p>I am working on a React web app with npm for the first time. I'm done with the development and now putting the built package on the web server (bluehost).
  All is working well on my Mac: the web app allows getting data from mySQL via php, and posting back to the database.
  But when I try the same app (on the same URL, same server, script, same everything...) on my Windows machine, I get an error on the first http request used for authentication.</p>
  
  <p><em>OPTION <a href="http://example.com/script.php" rel="nofollow noreferrer">http://example.com/script.php</a> net::ERR_CONNECTION_REFUSED</em></p>
  
  <p>First I thought this was a browser issue.
  But I don't get the error on Chrome on my mac but do on Chrome on my Windows, as well as FireFox.
  Again, I do not get this error when I test the app on my mac.</p>
  
  <p>Could anybody please give me some direction to solve this?</p>
  
  <p>Thank you!</p>