Avoid WebDav requests on request for downloading .doc file

We have WebDAV activated on our server. And when we try to make a download of a word fil开发者_StackOverflow中文版e from the server with the content-type "application/msword" a WebDAV authentication popup is shown. I do not want this popup. The file should just be downloaded and opened without

The only way I can avoid this, is giving it content-type "application/octet-stream".

Is that the preferred way to do this?

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No, the content type should stay what it is, correctly indicating the type.

The popup likely comes from Microsoft Office, which tries to open the document in read/write mode. I think it depends on the Office version how this works exactly, and how it could be disabled (so you'll probably can find the answer somewhere on MSDN).