Runtime error after migrating from 4.6.1 to 4.7.2 .NET framework

Question

I have an MVC web app that was running just fine on .NET framework 4.6.1. I had a need to change the target framework to 4.7.1 or later so I chose 4.7.2.

I simply changed the Target Framework dropdown under the project properties and updated web.config as follows. <compilation targetFramework="4.7.2" debug="true" />

I then ran Update-Package -Reinstall in Package Manager Console.

After doing so I now get the following runtime error:

System.IO.FileNotFoundException HResult=0x80070002 Message=Could not load file or assembly 'System.Runtime.InteropServices.RuntimeInformation, Version=4.0.2.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. Source= StackTrace:

This error is thrown on the var client line below

public static string getConnectionString(string secretName)
{  
    string kvURL = "https://blah_blah.vault.azure.net/";

    var client = new SecretClient(new Uri(kvURL), new DefaultAzureCredential());
    KeyVaultSecret cs = client.GetSecret(secretName);

    return cs.Value;
}

I have verified the path under references does point to an actual System.Runtime.InteropServices.RuntimeInformation.dll file.

After everything I tried, I finally resorted to running devenv /ResetSkipPkgs from the command line. No change.

Can someone advise what may have gone wrong? Are there additional or different steps I should have taken to change to 4.7.2?

What is the Visual Studio Version you are using? – Harshitha Apr 24 '23 at 05:20 — Harshitha, Apr 24 '23 at 05:20

score 1 · Answer 1 · answered Apr 24 '23 at 08:27

_System.IO.FileNotFoundException HResult=0x80070002 Message Could not load file or assemblySystem.Runtime.InteropServices.RuntimeInformation, Version=4.0.2.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

Your error clearly indicates that there are conflicting issues with the package versions.

As you have mentioned I have changed the Target Framework under the project properties and updated Web.config.
Make sure the Target Version is reflected in .csproj file.
Check whether you have the below settings.

In Web.config:

<dependentAssembly>
  <assemblyIdentity name="System.Runtime.InteropServices.RuntimeInformation" publicKeyToken="B03F5F7F11D50A3A" culture="neutral" />
  <bindingRedirect oldVersion="0.0.0.0-4.0.2.0" newVersion="4.0.2.0" />
</dependentAssembly>

In packages.config:

  <package id="System.Runtime.InteropServices.RuntimeInformation" version="4.3.0" targetFramework="net472" />

In .csproj file:

<Reference Include="System.Runtime.InteropServices.RuntimeInformation, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>packages\System.Runtime.InteropServices.RuntimeInformation.4.3.0\lib\net45\System.Runtime.InteropServices.RuntimeInformation.dll</HintPath>
  <Private>True</Private>
  <Private>True</Private>
</Reference>

My .csproj also got updated after running the Update-Package -Reinstall.

enter image description here

Code for getting Secret:

public async Task<ActionResult> Index()
{         
    var kvURL = "https://mykeyvault24Apr.vault.azure.net/";
    var credential = new DefaultAzureCredential();
    var client = new SecretClient(new Uri(kvURL), credential);
    var cs = await client.GetSecretAsync("Secret24April");

    ViewBag.cs = cs.Value.Value.ToString();
    return View();
}

Output of the Migrated 4.7.2 version:

enter image description here

Runtime error after migrating from 4.6.1 to 4.7.2 .NET framework

1 Answers1