We need to modify a couple of mime type definitions that are inherited in IIS. We have redefined them in the mime types section of Installshield's Internet Information Services section, but when we do the installation with a new website, they are not updated to the new definition. For instance, we need woff to be redefined to application/font-woff, but it never changes from font/x-woff that it is initially defined as in IIS. The installation log shows "InstallShield 8:37:40: Found element with property 'fileExtension' value of: .woff" but there is no other logging showing an update, so it is clearly not being updated. Is there a way in InstallShield to configure the mime type to modify pre-existing IIS mime types?