Adding IE 9 MIME Types to IIS 7

By Randall DuBois

April 23, 2010

The preview release of Microsoft Internet Explorer (IE) version 9 includes support for additional MIME Types for rich media applications. To support the additional MIME Types, the MIME types must be added to your IIS server.

The following additonal MIME types are supported in IE 9:

File name extension MIME type
.svg image/svg+xml
.xht application/xhtml+xml
.xhtml application/xhtml+xml

To learn more about the preview release of IE 9, see http://ie.microsoft.com/testdrive/. The Release Notes contain information about the new features supported in IE 9.

To add these MIME types to your IIS server, you can:

Using the AddMimeTypes Script

You can also use the script included in this article to add the MIME Types on versions of Windows including Windows 2000 and later. The script uses WMI, and will add the MIME types on either a local or remote server.

To add MIME types for IE 9 to your IIS server using the AddMimeTypes script:

  1. Create a new script file using your authoring tool or a text editor.
  2. Copy the contents of the script file from the following section.
  3. Paste the contents of the script into your new script file.
  4. Save the script file as AddMimeTypes.vbs.
  5. At a Command Prompt, type the following command:

    cscript AddMimeTypes.vbs [RemoteServerName]

    Replace [RemoteServerName] with the name of the remote computer you want to add the MIME types to.

    Note: If the folder in which the script file is saved is not included in your Path environment variable, you must specify the full path to the script in the command, or change directories to the folder before running the command.
  6. Verify the MIME types were added either by using the IIS Manager.

The AddMimeTypes.vbs Script

'  File: AddMimeTypes2.vbs 
' Copyright Microsoft Corp. 2010
'
' This script adds the following Mime types to the root of a local or remote
' server.
'
' (0) .svg image/svg+xml
' (1) .xht application/xhtml+xml
' (2) .xhtml application/xhtml+xml
'
' Usage:
' cscript AddMimeTypes.vbs [RemoteServerName]
'
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' OPTION EXPLICIT DIM strServer, objWMIService, objOperatingSystem, colOperatingSystems
DIM osVersion, iisVersion, objMimeMap, objMimeTypes, Mime, i
DIM objShell, strInetsrvDir, strInetpubScriptsDir
DIM numMimeTypes, numExistingMimes, mimeExists(2)
CONST ADS_PROPERTY_UPDATE = 2 IF WScript.Arguments.Length = 1 THEN
strServer = WScript.Arguments( 0 )
ELSE
strServer = "."
END IF iisVersion = "0" ' What version of Windows and IIS am I using? If I am on IIS 5.x/6 use adsutil.vbs
' If I am on IIS 7 and later use appcmd
SET objWMIService = GetObject("winmgmts:{impersonationLevel=impersonate}" _
+ "!\\" + strServer + "\root\cimv2") SET colOperatingSystems = _
objWMIService.ExecQuery("Select * from Win32_OperatingSystem") FOR EACH objOperatingSystem IN colOperatingSystems
osVersion = objOperatingSystem.Version
strInetsrvDir = objOperatingSystem.SystemDirectory + "\inetsrv"
strInetpubScriptsDir = objOperatingSystem.SystemDrive _
+ "\inetpub\AdminScripts"
NEXT IF ( 0 = Strcomp(strServer,".") ) THEN
strServer = "localhost"
END IF i = InStr(osVersion,"6.")
IF ( i = 1 ) THEN
iisVersion = "7"
END IF i = InStr(osVersion,"5.")
IF ( i = 1 ) THEN
iisVersion = "5"
END IF i = InStr(osVersion,"5.2")
IF ( i = 1 ) THEN
iisVersion = "6"
END IF SET objShell = WScript.CreateObject("WScript.Shell") SELECT CASE iisVersion
CASE "7"
' Run appcmd
objShell.Run(strInetsrvDir + _
"\appcmd.exe set config -section:system.webServer/staticContent /+_""[fileExtension='.svg',mimeType='image/svg%2Bxml']""")
objShell.Run(strInetsrvDir + _
"\appcmd.exe set config -section:system.webServer/staticContent /+""[fileExtension='.xht',mimeType='application/xhtml%2Bxml']""")
objShell.Run(strInetsrvDir + _
"\appcmd.exe set config -section:system.webServer/staticContent /+""[fileExtension='.xhtml',mimeType='application/xhtml%2Bxml']""")

CASE "6", "5"
' Use ADSI to add the MIME types.
' Can't use adsutil because they will destructively overwrite instead of appending
SET objMimeMap = GetObject( "IIS://" + strServer + "/MimeMap" )
objMimeTypes = objMimeMap.GetEx("MimeMap")
' Check to see if the MIME types already exist
mimeExists(0)=0
mimeExists(1)=0
mimeExists(2)=0
numExistingMimes=0 CheckIfMimeTypeExists(objMimeMap)
numExistingMimes=mimeExists(0)+mimeExists(1)+mimeExists(2)
IF ( 3 = numExistingMimes ) THEN
WScript.Echo("All extensions currently have mime types registered. Complete.")
WScript.Quit
END IF ' For extensions that don't have registered MIME types, add them
numMimeTypes = UBound(objMimeTypes)
REDIM PRESERVE objMimeTypes(numMimeTypes+3-numExistingMimes)
i = numMimeTypes+1
IF ( 0 = mimeExists(0) ) THEN
SET objMimeTypes(i) = CreateObject("MimeMap")
objMimeTypes(i).Extension = ".svg"
objMimeTypes(i).MimeType = "image/svg+xml"
i = i+1
ELSE
WScript.Echo("Mime type for .svg already exists")
END IF IF ( 0 = mimeExists(1) ) THEN
SET objMimeTypes(i) = CreateObject("MimeMap")
objMimeTypes(i).Extension = ".xht"
objMimeTypes(i).MimeType = "application/xhtml+xml"
i=i+1
ELSE
WScript.Echo("Mime type for .xht already exists")
END IF IF ( 0 = mimeExists(2) ) THEN
SET objMimeTypes(i) = CreateObject("MimeMap")
objMimeTypes(i).Extension = ".xhtml"
objMimeTypes(i).MimeType = "application/xhtml+xml"
ELSE
WScript.Echo("Mime type for .xhtml already exists")
END IF

objMimeMap.PutEx ADS_PROPERTY_UPDATE, "MimeMap", objMimeTypes
objMimeMap.SetInfo()
CASE ELSE
WScript.Echo("Unsupported IIS version")
END SELECT
SUB CheckIfMimeTypeExists(MimeMap) objMimeTypes = MimeMap.GetEx("MimeMap")
FOR EACH Mime IN objMimeTypes
SELECT CASE LCase(Mime.Extension)
CASE ".svg"
mimeExists(0) = 1
CASE ".xht"
mimeExists(1) = 1
CASE ".xhtml"
mimeExists(2) = 1
END SELECT
NEXT END SUB