如何使用DISM.exe卸载包含IIS8的ASP.NET 4.5

自己的网站时Framework4的，只安装了2.0，我想安装4，却报错，见图



如何卸载啊？求分享

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