.NET Framework 4安裝失敗 請救救我 - Windows

之前在更新時就有遇到了

不過應位都沒用到.NET Framework 4

所以就直接選擇隱藏更新失敗的項目

最近有程式要用到.NET Framework 4

所以就去抓來安裝，果不其然，還是失敗!!

有板友可以幫忙一下嗎!!?拜託拜託~

一些資料如下：

os:win7專業版 64bit (正版)
office 2010 64bit

安裝 dotNetFx40_Full_x86_x64 失敗 (原因：類別未登錄)

記錄檔如下：
OS Version = 6.1.7601, Platform 2, Service Pack 1
OS Description = Windows 7 - x64 Service Pack 1
CommandLine = G:\c177018bdea732fc95ad\\Setup.exe /x86 /x64
Using Simultaneous Download and Install mechanism
Operation: Installing
Package Name = Microsoft .NET Framework 4 Setup
Package Version = 4.0.30319
User Experience Data Collection Policy: Disabled
Number of applicable items: 11
Exe (G:\c177018bdea732fc95ad\SetupUtility.exe) succeeded.
Exe Log File: dd_SetupUtility.txt
ServiceControl operation succeeded!
ServiceControl operation succeeded!
Exe (G:\c177018bdea732fc95ad\Windows6.1-KB958488-v6001-x64.msu) failed with
0x80040154 - 類別未登錄 .
Final Result: Installation failed with error code: (0x80040154), "類別未登錄
" (Elapsed time: 0 00:00:25).

請各位幫幫我，500P跪求

感恩!!

--