This error occurs when there is a problem reading the configuration file for the Web server or Web application. In some cases, the event logs may contain more information about what caused this error.
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解决方案:
定位到:开始->控制面板->步伐->启用或关闭windows功能(新版本windows控制面板隐蔽有点深,可点击windows开始进行搜索“控制面板”切回旧的控制面板视图)
下图以windows 10为例:
在 启用或关闭windows功能列表中,可选择两者其一:
选项A :勾选“.NET Framework 3.5(包括.NET2.0和3.0)” 及 Internet Information Services->万维网服务->应用步伐开发功能->ASP.NET3.5与.NET Extensibility 3.5
选项B:勾选“.NET Framework 4.8 Advanced Services->ASP.NET4.8” 及 Internet Information Services->万维网服务->应用步伐开发功能->ASP.NET4.8与.NET Extensibility 4.8