IIS 401.3 error for mp4 files

Question

Hi All,

I have a web application which contains a virtual directory for videos. When ever user uploads a videos my automated programe creates mp4 version of that file. My virtual directory is using integrated windows auth. and my .wmv and .mp4 files are in the same folder.

When i am trying to access .mp4 version of the video it is showing me this error.

"HTTP Error 401.3 - Unauthorized: Access is denied due to an ACL set on the    requested resource."

At the same time when i access the .wmv file format it is working fine. can any one help me with this.

thanks

Answer 1

Add a MIME type for .mp4 extension in IIS configuration. I think that's the problem.