This is kind of an old issue, but since I mostly work on corporate projects, we\u2019re a bit slow on adopting new versions of anything.
\nI ran into this issue with Microsoft Word 2007 documents, but the same error will occur with any other file type that isn\u2019t properly configured on the web server.<\/p>\n
Symptoms<\/strong> Cause<\/strong> 1. Open IIS Management Console (via Computer Manager->Services and Applications->Internet Information Service)
\nMicrosoft Word 2007 documents return a HTTP 404 error when users attempt to download the documents. The web server uses Microsoft IIS 6.0.<\/p>\n
\nIIS does not have a wildcard mapping for unknown MIME types and the file type is not known to the web server. This prevents IIS 6.0 to serve the file.
\n
\nResolution<\/strong>
\nTo resolve the errors, add the missing MIME types to IIS.
\nInstructions<\/p>\n
\n2. Right click on \u201cWeb Sites\u201d.
\n3. Choose Properties
\n4. Activate \u201cHTTP Headers\u201d tab
\n5. Click \u201cFile Types\u201d button in the MIME Map groupbox
\n6. Click \u201cNew Type\u201d
\n7. Enter the MIME type data from the below table<\/p>\n