System.MissingMethodException: 'Method not found: 'Boolean System.MemoryExtensions.ContainsAny(System.ReadOnlySpan`1<!!0>, System.Buffers.SearchValues`1<!!0>)'.'

Question

System.MissingMethodException: 'Method not found: 'Boolean System.MemoryExtensions.ContainsAny(System.ReadOnlySpan`1<!!0>, System.Buffers.SearchValues`1<!!0>)'.'

Developer 60

I am using .Net 8 preview 5. I am trying to install nuget packages

Microsoft.Extensions.Logging.ApplicationInsights

Microsoft.Extensions.Logging.AzureAppServices

But getting the error in program.cs file for the below line

var builder = WebApplication.CreateBuilder(args);

System.MissingMethodException: 'Method not found: 'Boolean System.MemoryExtensions.ContainsAny(System.ReadOnlySpan1<!!0>, System.Buffers.SearchValues1<!!0>)'.'

I have removed all the other nuget packages and I am sure, the error is coming only for these packages.

Note: I have used these packages in .Net 6 and working fine. But I wanted to make it work for .Net 8

Farid Uddin Kiron MSFT 456 Reputation points Microsoft External Staff

2023-08-07T06:36:29.3733333+00:00

Not sure, how's your program.cs configuration looks like, could you please include that as well. In addition to this, did you had the chance to debug from where the error has been thrown? Do you have any other configuration which has not been shared within the question?

Developer 60

var builder = WebApplication.CreateBuilder(args);

string[] allowOrigins = builder.Configuration.GetSection("AllowOrigins").Get<string[]>()!;
builder.Services.AddCors(options =>
{
    options.AddDefaultPolicy(builder =>
    {
        builder.WithOrigins(allowOrigins).AllowAnyHeader().WithMethods("POST").AllowAnyHeader();
    });
});

builder.Services.AddControllers();
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

var app = builder.Build();
if (app.Environment.IsDevelopment() || app.Environment.IsProduction())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();
app.UseAuthorization();
app.MapControllers();
app.Run();

Developer 60 Reputation points

2023-08-07T13:30:46.8933333+00:00

This is the auto generated Program.cs file for the for WebApi project, I have not done any other configuration, just created a project and added nuget packages for Microsoft.Extensions.Logging.ApplicationInsights and Microsoft.Extensions.Logging.AzureAppServices
Developer 60 Reputation points

2023-08-07T13:32:58.7966667+00:00

I have not added any other configuration, this is auto generated file from WebAPI project

Developer 60

launchSettings.json

{
  "$schema": "http://json.schemastore.org/launchsettings.json",
  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:13823",
      "sslPort": 44377
    }
  },
  "profiles": {
    "https": {
      "commandName": "Project",
      "dotnetRunMessages": true,
      "launchBrowser": true,
      "launchUrl": "swagger",
      "applicationUrl": "http://localhost:7001",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }
  }
}

Developer 60 Reputation points

2023-08-08T02:43:19.57+00:00

I have downgraded the WebAPI project to .Net 7 and it works fine, I assume it is a bug in .Net 8 version.
Developer 60 Reputation points

2023-08-08T02:48:02.86+00:00

Its problem with Preview version of AzureAppServices of 8.0

Its working with .Net 8 with AzureAppServices 7.0.9.
Farid Uddin Kiron MSFT 456 Reputation points Microsoft External Staff

2023-08-08T06:02:42.7533333+00:00

Well, thanks for sharing the details, as .NET 8 still in pre-release phase, therefore, using in production still not recommended by Microsoft. Apart from that, what's your application insight version? Until, stable version, its better to continue with .NET 7 version.
Developer 60 Reputation points

2023-08-08T13:07:19.1066667+00:00

I downgraded to .NET 7, its fine, will wait for GA release.
Farid Uddin Kiron MSFT 456 Reputation points Microsoft External Staff

2023-08-10T02:50:01.41+00:00

Okay, thanks for your feedback, I am glad to hear that your .NET 7 version is working as expected.

Your answer

Farid Uddin Kiron MSFT 456 Reputation points Microsoft External Staff

2023-08-07T06:36:29.3733333+00:00

Not sure, how's your program.cs configuration looks like, could you please include that as well. In addition to this, did you had the chance to debug from where the error has been thrown? Do you have any other configuration which has not been shared within the question?
Developer 60 Reputation points

2023-08-07T13:27:02.57+00:00

var builder = WebApplication.CreateBuilder(args); string[] allowOrigins = builder.Configuration.GetSection("AllowOrigins").Get<string[]>()!; builder.Services.AddCors(options => { options.AddDefaultPolicy(builder => { builder.WithOrigins(allowOrigins).AllowAnyHeader().WithMethods("POST").AllowAnyHeader(); }); }); builder.Services.AddControllers(); builder.Services.AddEndpointsApiExplorer(); builder.Services.AddSwaggerGen(); var app = builder.Build(); if (app.Environment.IsDevelopment() || app.Environment.IsProduction()) { app.UseSwagger(); app.UseSwaggerUI(); } app.UseHttpsRedirection(); app.UseAuthorization(); app.MapControllers(); app.Run();
Developer 60 Reputation points

2023-08-07T13:30:46.8933333+00:00

This is the auto generated Program.cs file for the for WebApi project, I have not done any other configuration, just created a project and added nuget packages for Microsoft.Extensions.Logging.ApplicationInsights and Microsoft.Extensions.Logging.AzureAppServices
Developer 60 Reputation points

2023-08-07T13:32:58.7966667+00:00

I have not added any other configuration, this is auto generated file from WebAPI project
Developer 60 Reputation points

2023-08-07T13:48:04.5633333+00:00

launchSettings.json

{ "$schema": "http://json.schemastore.org/launchsettings.json", "iisSettings": { "windowsAuthentication": false, "anonymousAuthentication": true, "iisExpress": { "applicationUrl": "http://localhost:13823", "sslPort": 44377 } }, "profiles": { "https": { "commandName": "Project", "dotnetRunMessages": true, "launchBrowser": true, "launchUrl": "swagger", "applicationUrl": "http://localhost:7001", "environmentVariables": { "ASPNETCORE_ENVIRONMENT": "Development" } } } }
Developer 60 Reputation points

2023-08-08T02:43:19.57+00:00

I have downgraded the WebAPI project to .Net 7 and it works fine, I assume it is a bug in .Net 8 version.
Developer 60 Reputation points

2023-08-08T02:48:02.86+00:00

Its problem with Preview version of AzureAppServices of 8.0

Its working with .Net 8 with AzureAppServices 7.0.9.
Farid Uddin Kiron MSFT 456 Reputation points Microsoft External Staff

2023-08-08T06:02:42.7533333+00:00

Well, thanks for sharing the details, as .NET 8 still in pre-release phase, therefore, using in production still not recommended by Microsoft. Apart from that, what's your application insight version? Until, stable version, its better to continue with .NET 7 version.
Developer 60 Reputation points

2023-08-08T13:07:19.1066667+00:00

I downgraded to .NET 7, its fine, will wait for GA release.
Farid Uddin Kiron MSFT 456 Reputation points Microsoft External Staff

2023-08-10T02:50:01.41+00:00

Okay, thanks for your feedback, I am glad to hear that your .NET 7 version is working as expected.

Share via

System.MissingMethodException: 'Method not found: 'Boolean System.MemoryExtensions.ContainsAny(System.ReadOnlySpan`1<!!0>, System.Buffers.SearchValues`1<!!0>)'.'

Your answer