IIS默认支持哪些MIME类型呢，我们可以这样查看：打开IIS管理器（计算机——管理——服务和应用程序——Internet信息服务(IIS)管理器；或者Win+R，输入inetmgr，Enter），在IIS选择你的站点——功能视图里IIS栏找到MIME类型——右键——点击菜单中的“打开功能”，便可以看到，如下图所示：
IIS不支持没有注册到IIS的MIME文件下载，如.iso .7z .torrent .apk等文件格式，做下载站的朋友一般需要设置支持，方便支持不断新增加的文件类型。
否则出现404的提示或是直接在浏览器中把内容给显示出来了。都不能达到我们的目的。
以支持.7z文件格式为例，设置步骤如下：
点击上图中的“添加”，在弹出的窗体中的文件拓展名(E)框输入.7z，MIME类型(M)框输入application/octet-stream然后点击确定，如下图所示：
说明一下：MIME类型(M)框输入application/octet-stream的目的是为了让IIS把.7z文件当作是exe那样，出现下载的提示。
设置支持.iso .torrent文件格式的操作方法与上述相同，支持.apk格式只需在MIME类型(M)框输入application/vnd.android.package-archive
另附MIME的所有类型：
file type MIME type
ai application/postscript
aif audio/x-aiff
aifc audio/x-aiff
aiff audio/x-aiff
asc text/plain
atom application/atom+xml
au audio/basic
avi video/x-msvideo
bcpio application/x-bcpio
bin application/octet-stream
bmp image/bmp
cdf application/x-netcdf
cgm image/cgm
class application/octet-stream
cpio application/x-cpio
cpt application/mac-compactpro
csh application/x-csh
css text/css
dcr application/x-director
dif video/x-dv
dir application/x-director
djv image/vnd.djvu
djvu image/vnd.djvu
dll application/octet-stream
dmg application/octet-stream
dms application/octet-stream
doc application/msword
dtd application/xml-dtd
dv video/x-dv
dvi application/x-dvi
dxr application/x-director
eps application/postscript
etx text/x-setext
exe application/octet-stream
ez application/andrew-inset
gif image/gif
gram application/srgs
grxml application/srgs+xml
gtar application/x-gtar
hdf application/x-hdf
hqx application/mac-binhex40
htm text/html
html text/html
ice x-conference/x-cooltalk
ico image/x-icon
ics text/calendar
ief image/ief
ifb text/calendar
iges model/iges
igs model/iges
jnlp application/x-java-jnlp-file
jp2 image/jp2
jpe image/jpeg
jpeg image/jpeg
jpg image/jpeg
js application/x-javascript
kar audio/midi
latex application/x-latex
lha application/octet-stream
lzh application/octet-stream
m3u audio/x-mpegurl
m4a audio/mp4a-latm
m4b audio/mp4a-latm
m4p audio/mp4a-latm
m4u video/vnd.mpegurl
m4v video/x-m4v
mac image/x-macpaint
man application/x-troff-man
mathml application/mathml+xml
me application/x-troff-me
mesh model/mesh
mid audio/midi
midi audio/midi
mif application/vnd.mif
mov video/quicktime
movie video/x-sgi-movie
mp2 audio/mpeg
mp3 audio/mpeg
mp4 video/mp4
mpe video/mpeg
mpeg video/mpeg
mpg video/mpeg
mpga audio/mpeg
ms application/x-troff-ms
msh model/mesh
mxu video/vnd.mpegurl
nc application/x-netcdf
oda application/oda
ogg application/ogg
pbm image/x-portable-bitmap
pct image/pict
pdb chemical/x-pdb
pdf application/pdf
pgm image/x-portable-graymap
pgn application/x-chess-pgn
pic image/pict
pict image/pict
png image/png
pnm image/x-portable-anymap
pnt image/x-macpaint
pntg image/x-macpaint
ppm image/x-portable-pixmap
ppt application/vnd.ms-powerpoint
ps application/postscript
qt video/quicktime
qti image/x-quicktime
qtif image/x-quicktime
ra audio/x-pn-realaudio
ram audio/x-pn-realaudio
ras image/x-cmu-raster
rdf application/rdf+xml
rgb image/x-rgb
rm application/vnd.rn-realmedia
roff application/x-troff
rtf text/rtf
rtx text/richtext
sgm text/sgml
sgml text/sgml
sh application/x-sh
shar application/x-shar
silo model/mesh
sit application/x-stuffit
skd application/x-koan
skm application/x-koan
skp application/x-koan
skt application/x-koan
smi application/smil
smil application/smil
snd audio/basic
so application/octet-stream
spl application/x-futuresplash
src application/x-wais-source
sv4cpio application/x-sv4cpio
sv4crc application/x-sv4crc
svg image/svg+xml
swf application/x-shockwave-flash
t application/x-troff
tar application/x-tar
tcl application/x-tcl
tex application/x-tex
texi application/x-texinfo
texinfo application/x-texinfo
tif image/tiff
tiff image/tiff
tr application/x-troff
tsv text/tab-separated-values
txt text/plain
ustar application/x-ustar
vcd application/x-cdlink
vrml model/vrml
vxml application/voicexml+xml
wav audio/x-wav
wbmp image/vnd.wap.wbmp
wbmxl application/vnd.wap.wbxml
wml text/vnd.wap.wml
wmlc application/vnd.wap.wmlc
wmls text/vnd.wap.wmlscript
wmlsc application/vnd.wap.wmlscriptc
wrl model/vrml
xbm image/x-xbitmap
xht application/xhtml+xml
xhtml application/xhtml+xml
xls application/vnd.ms-excel
xml application/xml
xpm image/x-xpixmap
xsl application/xml
xslt application/xslt+xml
xul application/vnd.mozilla.xul+xml
xwd image/x-xwindowdump
xyz chemical/x-xyz
zip application/zip
IIS下配置手机下载站MIME属性：
手机下载类站点配置是很麻烦的 因为他需要添加大量的下载格式（例如下载飞信手机客户端安装包），这样手机玩家才能通过你的WAP站点下载手机图片、铃声、程序等各类资源。
让IIS服务器可以支持sis、SISX、3GP、ADP、AMR、JAD、JAR、MMF、MFM、PMD、UMD等文件下载，与前面介绍的操作方法相同，注意MIME类型(M)就好：
添加下列内容类型(MIME) 关联扩展名
text/vnd.wap.wml wml
image/vnd.wap.wbmp wbmp
text/vnd.wap.wmls wmls
application/vnd.wap.wmlc wmlc
application/vnd.wap.wmlscriptc wmlsc
text/vnd.wap.wmlscript wsc
text/vnd.wap.wmlscript wmlscript
如果需要支持java下载：在IIS中需要添加
.jad text/vnd.sun.j2me.app-descriptor
.jar application/java-archive
诺基亚大部分都是塞班手机要支持sis文件下载，在IIS中需要添加
.sis application/vnd.symbian.install
.SISX application/vnd.symbian.install
如果要支持Android谷歌操作系统IPK文件，需要添加
.apk application/vnd.android
如果要添加对iphone手机的支持需要添加如下格式
.ipa application/vnd.iphone
.pxl application/vnd.iphone
.ded application/vnd.iphone
.app application/vnd.iphone
如果要支持Window Mobile手机，例如HTC手机的支持要添加如下格式
.cab application/vnd.smartpohone
下载型WAP服务器
--------------------------------
.mmf audio/mmf
.mfm audio/mfm
.pmd audio/pmd
.adp audio/adp
.amr audio/amr
.pmdaudio/pmd
.3gp video/3gpp
.cab application/vnd.smartpohone
.gif image/gif
.ipa application/vnd.iphone
.pxl application/vnd.iphone
.ded application/vnd.iphone
.app application/vnd.iphone
.hme application/vnd.smartphone.thm
.jad text/vnd.sun.j2me.app-descriptor
.jar application/java-archive
.jpg image/jpeg
.mid audio/midi
.mp3 audio/x-mpeg
.mp4 video/mp4
.ogg application/ogg
.pdb application/ebook
.rm video/rm
.rng application/vnd.nokia.ringing-tone
.sdt application/vnd.sie.thm
.sis application/vnd.symbian.install
.apk application/vnd.android
.thm application/vnd.eri.thm
.tsk application/vnd.ppc.thm
.umd application/umd
.utz application/vnd.uiq.thm
.wav audio/x-wav
.wbmp image/vnd.wap.wbmp
.wml text/vnd.wap.wml
.wmlc application/vnd.wap.wmlc
.wmls text/vnd.wap.wmlscript
.wmlsc application/vnd.wap.wmlscriptc
.wmv video/x-ms-wmv
.wsc application/vnd.wap/wmlscriptc
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一般WAP服务器
.wbmp image/vnd.wap.wbmp
.wml text/vnd.wap.wml
.wmlc application/vnd.wap.wmlc
.wmls text/vnd.wap.wmlscript
.wmlsc application/vnd.wap.wmlscriptc
.wmv video/x-ms-wmv
.wsc application/vnd.wap/wmlscriptc
.gif image/gif
.jpg image/jpeg
.bmp image/bmp