当我尝试使用以下命令运行IIS Express 8时
iisexpress.exe /trace:error
在Windows 7上，我得到以下错误行：
"C:\Program Files (x86)\IIS Express>iisexpress.exe/trace:error
Starting IIS Express ...
Failed while trying to preload CLR version v4.0. hr = 80131700
Failed to initialize the W3WP_HOST hr = 80131700
Process Model Shutdown called
Unable to start iisexpress."
如何在Windows上运行IIS？