IIS .NET Extensibility 3.5安装

.NET Extensibility 3.5未安装，会导致IIS 里ISAPI and CGI Restrictions不可用，浏览IIS站点时aspx扩展名文件会报错404.3。因为Handler Mappings里没有 aspx的支持，安装后如下：

 

cmd脚本安装：

Dism.exe /online /enable-feature /featurename:IIS-ApplicationDevelopment /featurename:IIS-WebServer /featurename:IIS-WebServerRole /featurename:IIS-NetFxExtensibility /featurename:NetFx3 /featurename:IIS-ASPNET /featurename:IIS-ASPNET45 /source:"d:\sxs"