Welcome to our community! Here you can share advice and tips with thousands of other Microsoft mobile devices users around the world in English. Please take a moment to read our community guidelines for more information. Everyone can search and read the discussions, but to post your own question or reply to others you need to sign in first. If this is your first time here, you can choose an alias to represent you. If you don't have an account yet, please register here.
And the web site has also to send the correct MIME content type header for different file types that the phone supports. If the web server is incorrectly configured, the phone will not recognize the file type and will not know what to do with it.