HTTP 错误 500.21 - Internal Server Error
处理程序“ExtensionlessUrlHandler-Integrated-4.0”在其模块列表中有一个错误模块“ManagedPipelineHandler”
看了一篇这个，但是我的IIS 是WIN10.0
https://blog.csdn.net/sxf359/article/details/76241516
于是找到了，成功解决
https://blog.csdn.net/feigning/article/details/91345140
dism /online /enable-feature /featurename:IIS-ISAPIFilter
dism /online /enable-feature /featurename:IIS-ISAPIExtensions
dism /online /enable-feature /featurename:IIS-NetFxExtensibility45
dism /online /enable-feature /featurename:IIS-ASPNET45