title: Windows Azure - Serve unknown (mp4) MIME types in Windows Azure IIS storage
body: <p>I have a windows azure deployment (a web-role) that on request pulls in a pair of video files (mov and mp4) from azure storage into it's own local IIS storage, which I then access through the browser. </p>
  
  <p>It may sound silly, but I have good reasons for doing this. </p>
  
  <p>Unfortunately, I am unable to access the mp4 files. The mov are fine, but the mp4 give me "404 - File or directory not found."</p>
  
  <p>I've looked into this, and it seems to be because IIS will not return unknown file types, and mp4 must fall under this category. If it was a normal IIS server I would be able to register the mp4 mime type, but I don't know how to go about this in Windows Azure.</p>
  
  <p>I could RDP in and do it manually, but this would not be practical as the role is replaced frequently and would mean I would need to re-do it manually every time. It must be done through one of the config files or in code. </p>
  
  <p>Can anyone help?</p>
  
  <p>Thanks!!</p>
  
  <p>Steven</p>