WebClient UploadFile call fails only on MP4 files

So I have an application that uploads files to a server via POST and it uploads files of different types in the following sequence:

jpg->mp4->mp3

The jpg and mp3 uploads work just fine whereas the mp4 file upload fails with the following error:

The remote server returned an error: (404) Not Found.

I'm wondering how/why this could happen when I'm using t开发者_JS百科he same URL each time and the only thing that's changing here is the extension of the file.

Thanks!

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Change maxAllowedContentLength in your web.config to allow bigger file uploads.

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Your server is not accepting the file.