core

.NET Core 3.1.11 - January 12, 2021

The .NET 3.1.11 and .NET SDK 3.1.111 releases are available for download. The latest 3.1 release is always listed at .NET 3.1 Releases.

Downloads

  SDK Installer1 SDK Binaries1 Runtime Installer Runtime Binaries ASP.NET Core Runtime Windows Desktop Runtime
Windows x86 | x64 x86 | x64 | Arm x86 | x64 x86 | x64 | Arm x86 | x64 | Arm |
Hosting Bundle2
x86 | x64
macOS x64 x64 x64 x64 x641 -
Linux Snap Install x64 | Arm | Arm64 | x64 Alpine - x64 | Arm | Arm64 | x64 Alpine | Arm64 Alpine x641 | Arm1 | Arm641 | x64 Alpine | Arm64 Alpine -
  Checksums Checksums Checksums Checksums Checksums Checksums
  1. Includes the .NET Core and ASP.NET Core Runtimes.
  2. For hosting stand-alone apps on Windows Servers. Includes the ASP.NET Core Module for IIS and can be installed separately on servers without installing .NET Core runtime.

The .NET SDK includes a matching updated .NET Runtime. Downloading the Runtime or ASP.NET Core packages is not needed when installing the SDK.

You can check your .NET SDK version by running the following command. The example version shown is for this release.

$ dotnet --version
3.1.111

Visit .NET Documentation to learn about .NET, for building many different types of applications.

Docker Images

The .NET Docker images have been updated for this release. The .NET Docker samples show various ways to use .NET and Docker together.

The following repos have been updated.

Azure App Services

Visual Studio Compatibility

Visual Studio compatibility: .NET Core 3.1 requires Visual Studio 2019 16.4 or above to take full advantage of all its features. .NET Core 3.1 won’t work properly in earlier versions of Visual Studio. See the following table to select the correct download.

OS Development Environment .NET Core SDK
Windows Visual Studio 2019 version 16.7 3.1.405
Windows Visual Studio 2019 version 16.4 3.1.111
macOS Visual Studio for Mac Visual Studio for Mac .NET Core Support

Notable Changes

.NET Core 3.1.11 release carries both security and non-security fixes.

CVE-2021-1723 | ASP.NET Core Denial of Service Vulnerability

Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core and ASP.NET 5. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

A denial-of-service vulnerability exists in the way Kestrel parses HTTP/2 requests. The security update addresses the vulnerability by fixing the way the Kestrel parses HTTP/2 requests.

Additional fixes in this release

Adding a switch to enable sending ISO-8859-1 headers with SocketsHttpHandler

Since the introduction of SocketsHttpHandler in .NET Core 2.1, an attempt to send non-ASCII characters in HTTP headers throws an HttpRequestException. This (RFC-conform) behavior turned out to be a blocker for some users trying to migrate from .NET Framework. In .NET 5 we are addressing this by the introduction of SocketsHttpHandler.RequestHeaderEncodingSelector. To unblock users who are not (yet) able to migrate to .NET 5.0, we also added a runtime-configuration switch as part of .NET Core 3.1 servicing. This switch allows relaxing the HTTP header validation, enabling SocketsHttpHandler to send ISO-8859-1 (Latin-1) encoded characters in headers.

Note:

This switch is specific to .NET Core 3.1 since service release 3.1.11, and not available in later versions.

macOS Notarization Change

Running “dotnet build” will generate a dll instead of a dylib on macOS. This is a planned change to not use the AppHost by default on macOS because of notarization requirements. If you want to opt into using the AppHost, add the following to your project file:

<PropertyGroup>
  <UseAppHost>true</UseAppHost>
</PropertyGroup>

Feedback

Your feedback is important and appreciated. We’ve created an issue at dotnet/core #5838 for your questions and comments.

Packages updated in this release:

Package name Version
runtime.linux-arm64.Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
runtime.linux-musl-arm64.Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
runtime.linux-musl-arm64.Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
runtime.linux-arm.Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
Microsoft.WindowsDesktop.App.Runtime.win-x64 3.1.11.nupkg
Microsoft.NETCore.App.Host.linux-musl-arm64 3.1.11.nupkg
Microsoft.NETCore.App.Host.win-x64 3.1.11.nupkg
Microsoft.NETCore.App.Runtime.win-x86 3.1.11.nupkg
runtime.win-arm.Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
runtime.linux-arm.Microsoft.NETCore.DotNetHost 3.1.11.nupkg
runtime.linux-arm64.Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
Microsoft.NETCore.App.Runtime.linux-musl-arm64 3.1.11.nupkg
Microsoft.NETCore.App.Runtime.osx-x64 3.1.11.nupkg
Microsoft.NETCore.App.Runtime.win-x64 3.1.11.nupkg
Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
runtime.linux-musl-x64.Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
runtime.linux-x64.Microsoft.NETCore.DotNetHost 3.1.11.nupkg
runtime.osx-x64.Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.linux-musl-x64.Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
Microsoft.NETCore.App.Host.linux-arm64 3.1.11.nupkg
Microsoft.NETCore.App.Host.osx-x64 3.1.11.nupkg
runtime.win-arm64.Microsoft.NETCore.DotNetHost 3.1.11.nupkg
runtime.win-x64.Microsoft.NETCore.DotNetHost 3.1.11.nupkg
runtime.win-x86.Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.linux-arm.Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
runtime.linux-arm.Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.linux-arm64.Microsoft.NETCore.DotNetHost 3.1.11.nupkg
runtime.linux-musl-arm64.Microsoft.NETCore.DotNetHost 3.1.11.nupkg
runtime.linux-musl-arm64.Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.linux-x64.Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.osx-x64.Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
Microsoft.NETCore.App.Host.linux-musl-x64 3.1.11.nupkg
Microsoft.NETCore.App.Host.win-arm 3.1.11.nupkg
Microsoft.NETCore.App.Runtime.linux-arm64 3.1.11.nupkg
Microsoft.NETCore.App.Runtime.linux-x64 3.1.11.nupkg
runtime.win-x64.Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.win-x86.Microsoft.NETCore.DotNetHost 3.1.11.nupkg
runtime.linux-musl-x64.Microsoft.NETCore.DotNetHost 3.1.11.nupkg
runtime.linux-x64.Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
runtime.osx-x64.Microsoft.NETCore.DotNetHost 3.1.11.nupkg
Microsoft.WindowsDesktop.App.Runtime.win-x86 3.1.11.nupkg
Microsoft.NETCore.App.Runtime.linux-musl-x64 3.1.11.nupkg
Microsoft.NETCore.App.Runtime.win-arm 3.1.11.nupkg
Microsoft.NETCore.DotNetHost 3.1.11.nupkg
Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.win-arm.Microsoft.NETCore.DotNetHost 3.1.11.nupkg
runtime.win-arm.Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
runtime.win-arm64.Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
runtime.win-x86.Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
runtime.win-x86.Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
runtime.linux-arm64.Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.osx-x64.Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
Microsoft.NETCore.App.Host.linux-arm 3.1.11.nupkg
Microsoft.NETCore.App.Runtime.linux-arm 3.1.11.nupkg
runtime.win-arm.Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.win-arm64.Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
runtime.win-arm64.Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.win-x64.Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
runtime.win-x64.Microsoft.NETCore.DotNetHostPolicy 3.1.11.nupkg
runtime.linux-musl-x64.Microsoft.NETCore.DotNetHostResolver 3.1.11.nupkg
runtime.linux-x64.Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
Microsoft.NETCore.App.Host.linux-x64 3.1.11.nupkg
Microsoft.NETCore.App.Host.win-arm64 3.1.11.nupkg
Microsoft.NETCore.App.Host.win-x86 3.1.11.nupkg
Microsoft.NETCore.App.Runtime.win-arm64 3.1.11.nupkg
Microsoft.NETCore.DotNetAppHost 3.1.11.nupkg
Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore 3.1.11.nupkg
Microsoft.DotNet.Web.ProjectTemplates.3.1 3.1.11.nupkg
Microsoft.AspNetCore.App.Runtime.win-arm 3.1.11.nupkg
Microsoft.AspNetCore.App.Runtime.win-x86 3.1.11.nupkg
Microsoft.AspNetCore.ApiAuthorization.IdentityServer 3.1.11.nupkg
Microsoft.AspNetCore.Mvc.Testing 3.1.11.nupkg
Microsoft.AspNetCore.Mvc.NewtonsoftJson 3.1.11.nupkg
Microsoft.AspNetCore.SignalR.Specification.Tests 3.1.11.nupkg
Microsoft.AspNetCore.SignalR.Client 3.1.11.nupkg
Microsoft.AspNetCore.Hosting.WindowsServices 3.1.11.nupkg
Microsoft.AspNetCore.Components.Forms 3.1.11.nupkg
Microsoft.AspNetCore.Components 3.1.11.nupkg
Microsoft.Extensions.Identity.Stores 3.1.11.nupkg
Microsoft.Extensions.ApiDescription.Client 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.AzureAD.UI 3.1.11.nupkg
Microsoft.AspNetCore.App.Runtime.linux-arm64 3.1.11.nupkg
Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation 3.1.11.nupkg
Microsoft.AspNetCore.Owin 3.1.11.nupkg
Microsoft.AspNetCore.Identity.EntityFrameworkCore 3.1.11.nupkg
Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.Twitter 3.1.11.nupkg
Microsoft.AspNetCore.Components.Web 3.1.11.nupkg
Microsoft.Extensions.ApiDescription.Server 3.1.11.nupkg
Microsoft.AspNetCore.App.Runtime.win-x64 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.JwtBearer 3.1.11.nupkg
Microsoft.AspNetCore.JsonPatch 3.1.11.nupkg
Microsoft.AspNetCore.Metadata 3.1.11.nupkg
Microsoft.dotnet-openapi 3.1.11.nupkg
Microsoft.AspNetCore.SignalR.Client.Core 3.1.11.nupkg
Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore 3.1.11.nupkg
Microsoft.AspNetCore.HeaderPropagation 3.1.11.nupkg
Microsoft.AspNetCore.Components.Analyzers 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.WsFederation 3.1.11.nupkg
Microsoft.Extensions.Identity.Core 3.1.11.nupkg
Microsoft.AspNetCore.App.Runtime.win-arm64 3.1.11.nupkg
AspNetCoreRuntime.3.1.x86 3.1.11.nupkg
Microsoft.DotNet.Web.Spa.ProjectTemplates.3.1 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.AzureADB2C.UI 3.1.11.nupkg
Microsoft.AspNetCore.SignalR.Protocols.NewtonsoftJson 3.1.11.nupkg
Microsoft.AspNetCore.SignalR.Common 3.1.11.nupkg
Microsoft.AspNetCore.Http.Features 3.1.11.nupkg
Microsoft.AspNetCore.DataProtection.AzureStorage 3.1.11.nupkg
Microsoft.DotNet.Web.ItemTemplates 3.1.11.nupkg
Microsoft.AspNetCore.TestHost 3.1.11.nupkg
Microsoft.AspNetCore.SignalR.StackExchangeRedis 3.1.11.nupkg
Microsoft.AspNetCore.SignalR.Protocols.Json 3.1.11.nupkg
Microsoft.AspNetCore.Components.Authorization 3.1.11.nupkg
Microsoft.AspNetCore.AzureAppServicesIntegration 3.1.11.nupkg
Microsoft.AspNetCore.AzureAppServices.HostingStartup 3.1.11.nupkg
Microsoft.AspNetCore.Authorization 3.1.11.nupkg
Microsoft.AspNetCore.DataProtection.StackExchangeRedis 3.1.11.nupkg
Microsoft.AspNetCore.Cryptography.KeyDerivation 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.Certificate 3.1.11.nupkg
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 3.1.11.nupkg
Microsoft.AspNetCore.MiddlewareAnalysis 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.MicrosoftAccount 3.1.11.nupkg
Microsoft.DotNet.Web.Client.ItemTemplates 3.1.11.nupkg
Microsoft.AspNetCore.SpaServices.Extensions 3.1.11.nupkg
Microsoft.AspNetCore.DataProtection.EntityFrameworkCore 3.1.11.nupkg
Microsoft.AspNetCore.DataProtection.Abstractions 3.1.11.nupkg
Microsoft.AspNetCore.Cryptography.Internal 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.Google 3.1.11.nupkg
Microsoft.AspNetCore.App.Runtime.linux-arm 3.1.11.nupkg
Microsoft.AspNetCore.App.Runtime.osx-x64 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.Negotiate 3.1.11.nupkg
Microsoft.AspNetCore.ConcurrencyLimiter 3.1.11.nupkg
AspNetCoreRuntime.3.1.x64 3.1.11.nupkg
dotnet-sql-cache 3.1.11.nupkg
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 3.1.11.nupkg
Microsoft.AspNetCore.App.Runtime.linux-x64 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.Facebook 3.1.11.nupkg
Microsoft.AspNetCore.NodeServices 3.1.11.nupkg
Microsoft.AspNetCore.Identity.UI 3.1.11.nupkg
Microsoft.AspNetCore.Identity.Specification.Tests 3.1.11.nupkg
Microsoft.AspNetCore.Http.Connections.Common 3.1.11.nupkg
Microsoft.AspNetCore.SpaServices 3.1.11.nupkg
Microsoft.AspNetCore.SignalR.Protocols.MessagePack 3.1.11.nupkg
Microsoft.AspNetCore.Http.Connections.Client 3.1.11.nupkg
Microsoft.AspNetCore.AzureAppServices.SiteExtension 3.1.11.nupkg
Microsoft.AspNetCore.Authentication.OpenIdConnect 3.1.11.nupkg
Microsoft.AspNetCore.DataProtection.Extensions 3.1.11.nupkg
Microsoft.AspNetCore.DataProtection.AzureKeyVault 3.1.11.nupkg
Microsoft.AspNetCore.Connections.Abstractions 3.1.11.nupkg
Microsoft.AspNetCore.DataProtection 3.1.11.nupkg
Microsoft.DotNet.Common.ProjectTemplates.2.2 3.1.11.nupkg
Microsoft.DotNet.Common.ProjectTemplates.3.1 3.1.11.nupkg
Microsoft.DotNet.Common.ItemTemplates 3.1.11.nupkg
Microsoft.DotNet.Common.ProjectTemplates.3.0 3.1.11.nupkg
Microsoft.DotNet.Common.ProjectTemplates.2.0 3.1.11.nupkg
Microsoft.DotNet.Common.ProjectTemplates.1.x 3.1.11.nupkg
Microsoft.DotNet.Common.ProjectTemplates.2.1 3.1.11.nupkg
System.IO.Pipelines 4.7.4.nupkg
Microsoft.Bcl.HashCode 1.1.1.nupkg
Microsoft.NET.Sdk.Razor 3.1.11.nupkg
Microsoft.AspNetCore.Mvc.Razor.Extensions 3.1.11.nupkg
Microsoft.AspNetCore.Razor.Language 3.1.11.nupkg
Microsoft.CodeAnalysis.Razor 3.1.11.nupkg
dotnet-ef 3.1.11.nupkg
Microsoft.Data.Sqlite 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Analyzers 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Relational 3.1.11.nupkg
Microsoft.Data.Sqlite.Core 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Cosmos 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Design 3.1.11.nupkg
Microsoft.EntityFrameworkCore.SqlServer 3.1.11.nupkg
Microsoft.EntityFrameworkCore 3.1.11.nupkg
Microsoft.EntityFrameworkCore.InMemory 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Relational.Specification.Tests 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Proxies 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Abstractions 3.1.11.nupkg
Microsoft.EntityFrameworkCore.SqlServer.NetTopologySuite 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Specification.Tests 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Sqlite 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Tools 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Sqlite.Core 3.1.11.nupkg
Microsoft.EntityFrameworkCore.Sqlite.NetTopologySuite 3.1.11.nupkg
Microsoft.Extensions.Configuration.EnvironmentVariables 3.1.11.nupkg
Microsoft.Extensions.Configuration 3.1.11.nupkg
Microsoft.Extensions.FileProviders.Embedded 3.1.11.nupkg
Microsoft.Extensions.Options.ConfigurationExtensions 3.1.11.nupkg
Microsoft.Extensions.Logging.EventLog 3.1.11.nupkg
Microsoft.Extensions.Hosting 3.1.11.nupkg
Microsoft.Extensions.DependencyInjection 3.1.11.nupkg
Microsoft.Extensions.Configuration.UserSecrets 3.1.11.nupkg
Microsoft.Extensions.Configuration.CommandLine 3.1.11.nupkg
Microsoft.Extensions.Caching.StackExchangeRedis 3.1.11.nupkg
Microsoft.Extensions.Configuration.Abstractions 3.1.11.nupkg
Microsoft.Extensions.Primitives 3.1.11.nupkg
Microsoft.Extensions.Options.DataAnnotations 3.1.11.nupkg
Microsoft.Extensions.Logging.Console 3.1.11.nupkg
Microsoft.Extensions.Logging.Configuration 3.1.11.nupkg
Microsoft.Extensions.Hosting.Systemd 3.1.11.nupkg
Microsoft.Extensions.ObjectPool 3.1.11.nupkg
Microsoft.Extensions.Logging.EventSource 3.1.11.nupkg
Microsoft.Extensions.Logging.AzureAppServices 3.1.11.nupkg
Microsoft.Extensions.Http.Polly 3.1.11.nupkg
Microsoft.Extensions.FileProviders.Abstractions 3.1.11.nupkg
Microsoft.Extensions.Configuration.Json 3.1.11.nupkg
Microsoft.Extensions.FileProviders.Composite 3.1.11.nupkg
Microsoft.Extensions.Caching.SqlServer 3.1.11.nupkg
Microsoft.Extensions.Configuration.AzureKeyVault 3.1.11.nupkg
Microsoft.Extensions.Http 3.1.11.nupkg
Microsoft.Extensions.Logging 3.1.11.nupkg
Microsoft.Extensions.DiagnosticAdapter 3.1.11.nupkg
Microsoft.Extensions.DependencyInjection.Abstractions 3.1.11.nupkg
Microsoft.Extensions.Caching.Abstractions 3.1.11.nupkg
Microsoft.Extensions.Caching.Memory 3.1.11.nupkg
Microsoft.Extensions.FileSystemGlobbing 3.1.11.nupkg
Microsoft.Extensions.Logging.Abstractions 3.1.11.nupkg
Microsoft.JSInterop 3.1.11.nupkg
Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions 3.1.11.nupkg
Microsoft.Extensions.Configuration.Xml 3.1.11.nupkg
Microsoft.Extensions.Configuration.KeyPerFile 3.1.11.nupkg
Microsoft.Extensions.Configuration.FileExtensions 3.1.11.nupkg
Microsoft.Extensions.Configuration.Binder 3.1.11.nupkg
Microsoft.Extensions.Hosting.WindowsServices 3.1.11.nupkg
Microsoft.Extensions.Diagnostics.HealthChecks 3.1.11.nupkg
Microsoft.Extensions.DependencyInjection.Specification.Tests 3.1.11.nupkg
Microsoft.Extensions.Configuration.NewtonsoftJson 3.1.11.nupkg
Microsoft.Extensions.Configuration.Ini 3.1.11.nupkg
Microsoft.Extensions.WebEncoders 3.1.11.nupkg
Microsoft.Extensions.Options 3.1.11.nupkg
Microsoft.Extensions.Logging.TraceSource 3.1.11.nupkg
Microsoft.Extensions.FileProviders.Physical 3.1.11.nupkg
Microsoft.Extensions.Logging.Debug 3.1.11.nupkg
Microsoft.Extensions.Hosting.Abstractions 3.1.11.nupkg
Microsoft.Extensions.Localization 3.1.11.nupkg
Microsoft.Extensions.Localization.Abstractions 3.1.11.nupkg