IT:AD:IIS:HowTo:Configure MIME Types
MIME Types
By default, IIS doesn't allow access to file types it doesn't know about. To serve up KML, a relatively uncommon extension (KML)
- In IIS Manager, a website node > right-click > Properties
- Select HTTP Headers > MIME TYpes > New…
- Set file name extension (eg: “.KML”).
- Set type (eg: application/vnd.google-earth.kml+xml) * for an undefined MIME type, set Extension=*, and type=application/octet-stream * for a file without extension, set Extenion=.