There is no ASP. NET v4.0 in ISAPI and CGI restrictions; VS2013 detects an ASP. NET setting that is not applicable in integrated managed pipeline mode.

The system does have an ASP. NET v4.0, but there is no option in the ISAPI, which causes the server to not open.
Here's how to fix it:
1. Make sure that ASP. NET is installed when IIS is installed, and if not, check the reload, usually 404.2 when it does
2. If you installed IIS before you installed. NET, then you need to register the. NET again, usually 404.17 when you do
The command is: C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe-i
Restart IIS to see the

S2013 detects an ASP. NET setting that is not applicable in integrated managed pipeline mode.

Workaround: Add node information to the <configuration></configuration> node of Web. config:<system.webserver>    < Validation validateintegratedmodeconfiguration= "false"/>  </system.webServer>

It feels like this workaround is a temporary method, not a normal one.