System.MethodAccessException: 'Attempt by method 'Microsoft.Extensions.Logging.Configuration issue

Question

In .NETCore, While running the application in Program.cs file at CreateWebHostBuilder(args).Build().Run();

I'm getting the Exception

"System.MethodAccessException: 'Attempt by method 'Microsoft.Extensions.Logging.Configuration.LoggerProviderConfigurationFactory.GetConfiguration(System.Type)' to access method 'Microsoft.Extensions.Logging.ProviderAliasUtilities.GetAlias(System.Type)' failed.'"

in the Method

 public class Program
    {
        public static void Main(string[] args)
        {
            CreateWebHostBuilder(args).Build().Run();
        }

        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
            WebHost.CreateDefaultBuilder(args)
                .UseStartup<Startup>();
    }

How to resolve this. I tried by uninstalling and Installing Microsoft.AspNetCore but no use, Please see the screenshot of my Dependencies

Except theMicrosoft.Extension.Logging all the versions of dependcies are same. is there any problem that version difference. can someone help me to sort out this.

Answer 1

When I create a ASP.NET 2.2 project and add the package Microsoft.EntityFrameworkCore 3.1, I get the same error.

The solution is to update all Microsoft.Extensions.Logging.* package to the version 3.1.

Answer 2

The exception says the problem resides in 'Microsoft.Extensions.Logging.Configuration.LoggerProviderConfigurationFactory' (contained in Microsoft.Extensions.Logging.Configuration assembly).

As Microsoft says here: https://docs.microsoft.com/en-us/dotnet/api/system.methodaccessexception?redirectedfrom=MSDN&view=net-5.0

The MethodAccessException exception is thrown in situations such as the following:

• A private, protected, or internal method that would not be accessible from normal compiled code is accessed from partially trusted code by using reflection.
• The access level of a method in a class library has changed, and one or more assemblies that reference the library have not been recompiled.

Basically, you have a reference to Microsoft.Extensions.Logging '3.1.6', but another reference to Microsoft.Extensions.Configuration.Logging version '2.2.0', and that assembly was surely compiled before Microsoft.Extensions.Logging '3.1.6'

All can be resolved modifying/adding an explicit Package Reference in your project: