安装时提示Web Applications unavailable，解决办法如下： 开启Windows的如下功能： · Web Server (IIS) · Web Server · Common HTTP Features · Static Content · Application Development · ASP.NET · .NET Extensibility · ISAPI Extensions · ISAPI Filters · Security · Basic Authentication · Windows Authentication · Request Filtering · Management Tools · IIS Management Console · IIS Management Scripts and Tools · Management Service · IIS 6 Management Compatibility · IIS 6 Metabase Compatibility   图：