CA1062 not evaluating on .Net Standard 2.0 class library

Question

I'm unable to get CA1062 (validate arguments of public methods) to evaluate.

I've created a .Net Standard 2.0 C# class library and installed Microsoft.CodeQuality.Analyzers and several others nuget packages as per this screenshot:

I've also enabled CA1062 in the ruleset for the project, as per the image:

I've created this class to test if CA1062 (validate arguments of public methods) does evaluate:

public class Person
{
    public String Name { get; }
    public Person(String name)
    {
        this.Name = name;
    }
    public void DeclareWarOn(Person enemy)
    {
        String enemyName = enemy.Name;
        Console.WriteLine($"{this.Name} declared war on {enemyName}");
    }
}

In the DeclareWarOn method the parameter enemy is never checked for a null value but is used in the line String enemyName = enemy.Name;

This is suppose to trigger CA1062, but it is not triggered.

Other rules do evaluate. As example, I have created an internal Exception class as such:

internal class MyException : Exception 
{ 
    ... 
}

And this did indeed trigger the relevant code analysis warning for it (CA1064). However I can't get CA1062 to evaluate.

Answer 1

I've recently removed all Analyzers and installed a higher version of the FxCop package on this project, and it solved the issue.

(I've added this in case any developer discovers this post and is still searching for a solution)