Errors when running apps in ASP.NET MVC CORE

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2.33/5 (2 votes)

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Hello guys,

I am recently set up Visual Studio 2017, but When i try to start ASP.NET MVC CORE Project that runtime error appears:

System.MissingMethodException occurred
HResult=0x80131513
Message=Method not found: 'System.IServiceProvider Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(Microsoft.Extensions.DependencyInjection.IServiceCollection)'.
Source=<Cannot evaluate the exception source>
StackTrace:
at Microsoft.AspNetCore.Hosting.WebHostBuilder.Build()
at WebApplication4.Program.Main(String[] args) in C:\Users\qqq\documents\visual studio 2017\Projects\WebApplication4\WebApplication4\Program.cs:line 14

and when i try to run another ASP.NET MVC CORE Project this error message appears:

Unable to start process C:\Program Files\dotnet\dotnet.exe. The web server request failed with status code 500, Internal Server Error. The full response has been written to C:\Users\qqq\AppData\Local\Temp\HttpFailure_04-02-08.html.
Are these errors because of IIS Error or something in configuration ?

that is my project.csproj:

HTML

<pre><Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp1.1</TargetFramework>
  </PropertyGroup>

  <PropertyGroup>
    <PackageTargetFallback>$(PackageTargetFallback);portable-net45+win8+wp8+wpa81;</PackageTargetFallback>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.0.0" />
    <PackageReference Include="Microsoft.AspNetCore" Version="1.1.1" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.1" />
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.0.0-preview1-final" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="2.0.0-preview1-final" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.0.0-preview1-final" />
    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.1.1" />
    <PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="1.1.0" />
  </ItemGroup>
  <ItemGroup>
    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="1.0.0" />
  </ItemGroup>

</Project>

What I have tried:

I searched but cannot find any...

Posted 13-May-17 3:35am

MrLonely_2

Updated 15-May-17 4:16am

v3

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[no name] 13-May-17 9:38am

You would have to look at your code and the error log produced to figure it out.

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Assil · Answer 1 · 2017-05-14T14:40:00

This error usually happens because of incompatible versions of packages.
Like this block:

2.0.0-preview1-final" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="2.0.0-preview1-final" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.0.0-preview1-final" />

Try to reduce the versions to 1.1.*
And it will fix your problem..

Incompatible consistency because of some packages are either too high or too low compared to other ones.