The ASPNETCoreModule which is required to host .NET Core projects in IIS does not appear to be installed

Question

I've just installed Visual Studio 2015 and have just created new ASP.NET Core Web Application project. When I run the ASP.NET Core Web application project I've met the following exception(I am just hitting Ctrl+F5 to run the project in Visual Studio 2015):

The ASPNETCoreModule which is required to host .NET Core projects in IIS does not appear to be installed. Try repairing Visual Studio to correct the problem.

If I run other types of projects such as ASP.NET MVC or ASP.NET Web API, then they run perfectly.

The following SDK is already installed:

My project.json file:

{
  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.1",
      "type": "platform"
    },
    "Microsoft.ApplicationInsights.AspNetCore": "1.0.0",
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.1",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "Microsoft.AspNetCore.Routing": "1.0.1",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.1",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
    "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0"
  },

  "tools": {
    "BundlerMinifier.Core": "2.0.238",
    "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final",
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
  },

  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "dotnet5.6",
        "portable-net45+win8"
      ]
    }
  },

What I've tried to do:

1. I have varied version attribute to 1.0.0-preview2-final, 1.0.1, 1.0.3 :

   "Microsoft.NETCore.App": { "version": "1.0.3",//1. "type": "platform" },

2. I have installed DotNetCore.1.0.4_1.1.1-WindowsHosting:

3. I have repaired Visual Studio 2015 Professional twice.

Does anybody know what I should do to fix the problem? Any help would be greatly apreciated

Answer 1

I got this error in Visual Studio 2019 and my solution was to run the VS installer and verify that the ASP.NET workload was installed. In my case it was not, simply installing it resolved the issue.

Exact steps to take if you want to follow my solution:

• Open VS installer
• Click MODIFY on the SKU of VS you were trying to use when you got the error (in my case the Preview version of VS enterprise)
• In the list of workloads make sure ASP.NET is checked, if not check it and click install

Answer 2

This happened for me with an update to VS 2019. What I did was:

1. Open Visual Studio Installer.
2. Click Modify
3. Click "Development time IIS support" under ".NET cross-platform development"
4. Click Modify

This fixed the issue for me.