16399更新問題

我裝不到Windows6.1-KB972636
說不applicable

上網看到Windows6.1-KB972636
    IE8兼容性視圖數据庫:iecompat.dll,版本號8.0.7600.16400
iecompat.dll是指哪個??我有4個
1.iecompat.dll 8.0.7600.16407(IE8 folder)
2.iecompat.dll 8.0.7600.16407(winsxs)
3.iecompat.dll 8.0.7600.20504(winsxs)
4.iecompat.dll 8.0.7600.16385(winsxs)    (更新唔度??)
C:\Windows\winsxs\x86_microsoft-windows-ie-iecompat_31bf3856ad364e35_8.0.7600.16385_none_bb8025d1093fb1c7

我想知點解唔得