title: Why the error 404 happens when I access *.mp4 file by HTTP?
body: <p>I have some shared folder over HTTP. Lets say: <a href="http://myserver/files">http://myserver/files</a></p>
  
  <p>And there are some filed like png, avi, jpg, mp4 and etc.</p>
  
  <p>I can easily access *.png or *.avi via browser (http://myserver/files/555.avi) but cannot  access to *.mp4. </p>
  
  <p>So IIS gives the 404 error.</p>
  
  <p>What's up?</p>
  
  <p>Thank you!</p>
  
  <p>UPDATES:</p>
  
  <p>May be it is important: I have to access by this URL format </p>
  
  <p><a href="http://112.333.44.33/files/555.mp4">http://112.333.44.33/files/555.mp4</a></p>