1.查看安裝失敗的日志，確保是因為.net安裝失敗導致的錯誤。
2.安裝目錄下，Setup.ini中修改如下內容
將DOTNET BEGIN到DOTNET END之間的部分替換成以下代碼，並保存：
#============= DOTNET Begin =============== [DOTNET4] PLATFORM=ALL PRODUCT_NAME=.NET Framework Runtime 4.0 EXE_PATH=3rdParty\NET\4\wcu\dotNetFramework\dotNetFx40_Full_x86_x64.exe EXE_PARAM=/q VC_FUNC=DotnetVerify VC_SOURCE=Setup\SetupUi.dll VC_PARAM=.NET Framework 4 Full VC_DESCRIPTION=Detecting .NET 4.0 Runtime DISKCOST=80000000 IGNORE_FAILURE=YES [DOTNET4LANG] PRODUCT_NAME=.NET Framework Runtime 4.0 Language Pack EXE_PATH=3rdParty\NET\4\wcu\dotNetFramework\dotNetFx40LP_Full_x86_x64_%lang%.exe EXE_PARAM=/q EXE_LANGS=1036;1040;1031;1034;1046;1041;1042;2052;1028;1029;1038;1045;1049 DISKCOST=3000000 IGNORE_FAILURE=YES [DOTNET35SP1] PLATFORM=ALL PRODUCT_NAME=.NET Framework Runtime 3.5 SP1 EXE_PATH=3rdParty\NET\35SP1\wcu\dotNetFramework\dotnetfx35.exe EXE_PARAM=/q /lang:ENU /norestart VC_FUNC=DotnetVerify VC_SOURCE=Setup\SetupUi.dll VC_PARAM=.NET Framework 3.5 SP1 VC_DESCRIPTION=Detecting .NET Runtime 3.5 SP1 DISKCOST=80000000 IGNORE_FAILURE=YES ACTION=INSTALL [DOTNET20] PLATFORM=NATIVE PRODUCT_NAME=.NET Framework Runtime 2.0 EXE_PATH=3rdParty\%platform%\NET\2\NetFx20.exe EXE_PARAM=/q:a /c:"install.exe /q" VC_FUNC=DotnetVerify VC_SOURCE=Setup\SetupUi.dll VC_PARAM=.NET Framework 2.0 VC_DESCRIPTION=Detecting .NET 2.0 Runtime DISKCOST=80000000 IGNORE_FAILURE=YES [DOTNET] PLATFORM=ALL PRODUCT_NAME=.NET Framework Runtime 4.0 EXE_PATH=3rdParty\NET\4\wcu\dotNetFramework\dotNetFx40_Full_x86_x64.exe VC_PARAM=4.0.30319 VC_DESCRIPTION=Detecting .NET 4.0 Runtime IGNORE_FAILURE=YES #============= DOTNET End ===============
3.重新執行安裝程序，會忽略掉.net的安裝錯誤。
原內容來自百度經驗，感謝原作者的分享。