Method not found: 'System.IServiceProvider Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider'

Question

In my Main method of .net Core app Iam getting this error and I dunno where should I look for solution.

this is my main method:

 public static void Main(string[] args)
    {
        var host = new WebHostBuilder()
            .UseKestrel()
            .UseContentRoot(Directory.GetCurrentDirectory())
            .UseIISIntegration()
            .UseStartup<Startup>()
            .UseApplicationInsights()
            .Build();

        host.Run();
    }

This is error message I am getting when hit F5 to fire project:

System.MissingMethodException: 'Method not found: 'System.IServiceProvider Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(Microsoft.Extensions.DependencyInjection.IServiceCollection)'.'

Answer 1

I've just come across this issue using aspnet core 2.0, in my case upgrading the other default packages (AspNetCore, AspNetCore.Mvc, NetCore.App) to 2.0 did the trick, despite installing 2.0 the packages (apart from App insights) were 1.1.x initially

Answer 2

For .NET Core 3.1, for some reason Visual Studio wasn't giving me the hint that I need to add using Microsoft.Extensions.DependencyInjection;. Manually adding that fixed it for me.