.NET 8 in-process model Could not load file or assembly 'Microsoft.Extensions.DependencyModel, Version=8.0.0.1

[vladyslav-panasenko]

Version

• AzureFuntionTools 4.84.0-inprocess
• Windows 11
• .NET 8
• Azure function V4 in-process model

Description

• Error during Azure function startup

  • System.IO.FileNotFoundException: 'Could not load file or assembly 'Microsoft.Extensions.DependencyModel, Version=8.0.0.1, Culture=neutral, PublicKeyToken=adb9793829ddae60'. The system cannot find the file specified.'

• Serilog.AspNetCore 8.0.2 depends on Microsoft.Extensions.DependencyModel 8.0.1

• Microsoft.Extensions.DependencyModel DLL in AzureFunctionsTools\Releases\4.84.0-inprocess\cli_x64
  

Steps to reproduce

Run Azure function locally

FunctionApp1.zip

Startup.cs

internal class Startup : FunctionsStartup
{
    public IConfiguration Configuration { get; set; }

    public override void ConfigureAppConfiguration(IFunctionsConfigurationBuilder builder)
    {
        var fileInfo = new FileInfo(Assembly.GetExecutingAssembly().Location);
        var path = fileInfo.Directory.Parent.FullName;
        var environment = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT")?.ToLower() ?? "dev";

        Configuration = builder.ConfigurationBuilder
            .SetBasePath(path)
            .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
            .AddJsonFile($"appsettings.{environment}.json", optional: true, reloadOnChange: true)
            .AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
            .AddEnvironmentVariables()
            .Build();
    }

    public override void Configure(IFunctionsHostBuilder builder)
    {
        ConfigureServices(builder.Services);
    }

    private void ConfigureServices(IServiceCollection services)
    {
        var configReaderOptions = new ConfigurationReaderOptions(ConfigurationAssemblySource.AlwaysScanDllFiles)
        {
            SectionName = ConfigurationLoggerConfigurationExtensions.DefaultSectionName,
        };

        var logger = new LoggerConfiguration()
           .ReadFrom.Configuration(Configuration, configReaderOptions)
           .Enrich.FromLogContext()
           .Enrich.WithCorrelationId()
           .Enrich.WithExceptionDetails()
           .CreateLogger();

        services.AddLogging(lb => lb.AddSerilog(logger));
    }

csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <AzureFunctionsVersion>v4</AzureFunctionsVersion>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="4.4.1" />
    <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0" />
    <PackageReference Include="Serilog.AspNetCore" Version="8.0.2" />
    <PackageReference Include="Serilog.Enrichers.CorrelationId" Version="3.0.1" />
    <PackageReference Include="Serilog.Exceptions" Version="8.4.0" />
  </ItemGroup>
  <ItemGroup>
    <None Update="host.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="appsettings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </None>
    <None Update="local.settings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </None>
  </ItemGroup>
</Project>

Simple HTTP trigger

    public class Function1
    {
        private readonly ILogger<Function1> _logger;
        public Function1(ILogger<Function1> logger)
        {
            _logger = logger;
        }

        [FunctionName("Function1")]
        public async Task<IActionResult> RunAsync(
            [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req)
        {
            _logger.LogInformation("C# HTTP trigger function processed a request.");

            var requestBody = await new StreamReader(req.Body).ReadToEndAsync();

            _logger.LogInformation(requestBody);
            
            return new OkObjectResult(requestBody);
        }
    }

[vladyslav-panasenko]

@mattchenderson, Is it possible for someone to investigate this matter?

[vladyslav-panasenko]

I tried using the latest Azure functions tools (4.97.0) and Microsoft.NET.Sdk.Functions 4.5.0. Same issue. Any suggestions?