# .NET Core 3.1.0 - December 3, 2019

[.NET Core 3.1.0](https://dotnet.microsoft.com/download/dotnet-core/3.1) is available for download and usage in your environment. This release includes .NET Core 3.1.0 and .NET Core SDK 3.1.100.

* [Blog Roundup](#blog-roundup)
* [Downloads](https://dotnet.microsoft.com/download/dotnet-core/3.1)
* [Changes in this release](#notable-changes-in-310)
* [Known issues](../3.1-known-issues.md)
* [Visual Studio Compatibility](#visual-studio-compatibility)

The .NET Core SDK 3.1.100 includes .NET Core 3.1 Runtime so downloading the runtime packages separately is not needed when installing the SDK. After installing the .NET Core SDK 3.1.100, the following command will show that you're running version `3.1.100` of the tools.

`dotnet --version`

Your feedback is important and appreciated. We've created an issue at [dotnet/core #3950](https://github.com/dotnet/core/issues/3950) for your questions and comments.

## Blog Roundup

* [.NET Core 3.1][dotnet-blog]
* [ASP.NET Core][aspnet-blog]

## Downloads

|           | SDK Installer<sup>1</sup>                        | SDK Binaries<sup>1</sup>                 | Runtime Installer                                        | Runtime Binaries                                 | ASP.NET Core Runtime           | Windows Desktop Runtime           |
| --------- | :------------------------------------------:     | :----------------------:                 | :---------------------------:                            | :-------------------------:                      | :-----------------:            |:-----------------:            |
| Windows   | [x86][dotnet-sdk-win-x86.exe] \| [x64][dotnet-sdk-win-x64.exe] | [x86][dotnet-sdk-win-x86.zip] \| [x64][dotnet-sdk-win-x64.zip] \| [ARM][dotnet-sdk-win-arm.zip] | [x86][dotnet-runtime-win-x86.exe] \| [x64][dotnet-runtime-win-x64.exe] | [x86][dotnet-runtime-win-x86.zip] \| [x64][dotnet-runtime-win-x64.zip] \| [ARM][dotnet-runtime-win-arm.zip]  | [x86][aspnetcore-runtime-win-x86.exe] \| [x64][aspnetcore-runtime-win-x64.exe] \| [ARM][aspnetcore-runtime-win-arm.zip] \|<br> [Hosting Bundle][dotnet-hosting-win.exe]<sup>2</sup> | [x86][windowsdesktop-runtime-win-x86.exe] \| [x64][windowsdesktop-runtime-win-x64.exe] | 
| macOS     | [x64][dotnet-sdk-osx-x64.pkg]  | [x64][dotnet-sdk-osx-x64.tar.gz]     | [x64][dotnet-runtime-osx-x64.pkg] | [x64][dotnet-runtime-osx-x64.tar.gz] | [x64][aspnetcore-runtime-osx-x64.tar.gz]<sup>1</sup> | - |
| Linux     |  [Snap Install][snap-install]  | [x64][dotnet-sdk-linux-x64.tar.gz] \| [ARM][dotnet-sdk-linux-arm.tar.gz] \| [ARM64][dotnet-sdk-linux-arm64.tar.gz] \| [x64 Alpine][dotnet-sdk-linux-musl-x64.tar.gz] | - | [x64][dotnet-runtime-linux-x64.tar.gz] \| [ARM][dotnet-runtime-linux-arm.tar.gz] \| [ARM64][dotnet-runtime-linux-arm64.tar.gz] \| [x64 Alpine][dotnet-runtime-linux-musl-x64.tar.gz] | [x64][aspnetcore-runtime-linux-x64.tar.gz]<sup>1</sup>  \| [ARM][aspnetcore-runtime-linux-arm.tar.gz]<sup>1</sup> \| [ARM64][aspnetcore-runtime-linux-arm64.tar.gz]<sup>1</sup> \| [x64 Alpine][aspnetcore-runtime-linux-musl-x64.tar.gz]<sup>1</sup> | - |
| RHEL6     | -                                                | [x64][dotnet-sdk-rhel.6-x64.tar.gz]                    | -                                                        | [x64][dotnet-runtime-rhel.6-x64.tar.gz] | - |
| Checksums | [SDK][checksums-sdk]                             | -                                        | [Runtime][checksums-runtime]                             | - | - | - |

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.

## Visual Studio Compatibility

**Visual Studio compatibility:** .NET Core 3.1 requires Visual Studio 2019 16.4 to take full advantage of all its features. .NET Core 3.1 will not work properly in earlier versions of Visual Studio.

## Docker Images

The [.NET Core Docker images](https://hub.docker.com/r/microsoft/dotnet/) have been updated for this release. Details on our Docker versioning and how to work with the images can be seen in ["Staying up-to-date with .NET Container Images"](https://blogs.msdn.microsoft.com/dotnet/2018/06/18/staying-up-to-date-with-net-container-images/).

The following repos have been updated

* [dotnet/core/runtime](https://hub.docker.com/_/microsoft-dotnet-core-runtime/)
* [dotnet/core/sdk](https://hub.docker.com/_/microsoft-dotnet-core-sdk/)

## Notable Changes in 3.1.0

Here is list of some of the additions and updates we're excited to bring in 3.1. See the [.NET][dotnet-blog] and [ASP.NET Core][aspnet-blog] blogs for additional details.

* CoreCLR: [bugs][coreclr_bugs] | [features][coreclr_features]
* CoreFX: [bugs][corefx_bugs] | [features][corefx_features]
* ASP.NET Core: [bugs][aspnet_bugs] | [features][aspnet_features]

[blob-runtime]: https://dotnetcli.blob.core.windows.net/dotnet/Runtime/
[blob-sdk]: https://dotnetcli.blob.core.windows.net/dotnet/Sdk/
[release-notes]: https://github.com/dotnet/core/blob/master/release-notes/3.1/3.1.0/3.1.0.md
[snap-install]: 3.1.0-install-instructions.md

[checksums-runtime]: https://dotnetcli.blob.core.windows.net/dotnet/checksums/3.1.0-sha.txt
[checksums-sdk]: https://dotnetcli.blob.core.windows.net/dotnet/checksums/3.1.0-sha.txt

[linux-install]: https://www.microsoft.com/net/download/linux
[linux-setup]: https://github.com/dotnet/core/blob/master/Documentation/linux-setup.md

[dotnet-blog]: https://devblogs.microsoft.com/dotnet/announcing-net-core-3-1/
[aspnet-blog]: https://devblogs.microsoft.com/aspnet/asp-net-core-updates-in-net-core-3-1/

[aspnet_bugs]: https://github.com/aspnet/AspNetCore/issues?utf8=%E2%9C%93&q=is%3Aclosed+3.1+in%3Amilestone+is%3Amerged+-label%3Aarea-infrastructure+-involves%3Adotnet-maestro-bot+-involves%3Aapp%2Fdotnet-maestro+
[aspnet_features]: https://github.com/aspnet/AspNetCore/issues?utf8=%E2%9C%93&q=is%3Aclosed+3.1+in%3Amilestone+label%3Aenhancement+label%3Adone
[coreclr_bugs]: https://github.com/dotnet/coreclr/issues?utf8=%E2%9C%93&q=is%3Aclosed+3.1+in%3Amilestone+is%3Amerged+-involves%3Adotnet-maestro-bot+-involves%3Aapp%2Fdotnet-maestro+NOT+branding+
[coreclr_features]: https://github.com/dotnet/coreclr/issues?utf8=%E2%9C%93&q=is%3Aissue+3.1+in%3Amilestone+label%3Aenhancement+
[corefx_bugs]: https://github.com/dotnet/corefx/issues?utf8=%E2%9C%93&q=is%3Aclosed+3.1+in%3Amilestone+is%3Amerged+-involves%3Adotnet-maestro-bot+-involves%3Aapp%2Fdotnet-maestro+NOT+branding+
[corefx_features]: https://github.com/dotnet/corefx/issues?utf8=%E2%9C%93&q=is%3Aissue+3.1+in%3Amilestone+label%3Aenhancement+

[//]: # ( Runtime 3.1.0)
[dotnet-runtime-linux-arm.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/60d21925-7f8f-4004-9afe-aebd041d2d4a/0db2946738642d7f88f71f7800522e8c/dotnet-runtime-3.1.0-linux-arm.tar.gz
[dotnet-runtime-linux-arm64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/6f19b1ba-8a5e-42ff-abb5-a49f837aa183/a6e01cdf317b967da67eace7565a5b2e/dotnet-runtime-3.1.0-linux-arm64.tar.gz
[dotnet-runtime-linux-musl-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/3097bf45-0b38-4de7-a383-2ff746c59551/908fb4f966a1a471b9754d4d52a5815b/dotnet-runtime-3.1.0-linux-musl-x64.tar.gz
[dotnet-runtime-linux-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/5d139dff-4ca0-4e0c-a68b-0976281d5b2d/d306f725466e058842faa25bf1b2f379/dotnet-runtime-3.1.0-linux-x64.tar.gz
[dotnet-runtime-osx-x64.pkg]: https://download.visualstudio.microsoft.com/download/pr/861a1498-68dd-4b8d-8400-4636d6375074/f7fe3a98e33d6a93f35b64d399b346f9/dotnet-runtime-3.1.0-osx-x64.pkg
[dotnet-runtime-osx-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/454ca582-64f7-4817-bbb0-34a7fb831499/1d2d5613a2d2ebb26da04471e97cb539/dotnet-runtime-3.1.0-osx-x64.tar.gz
[dotnet-runtime-rhel.6-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/76cabfc3-6010-472e-a5b3-bfe854a24c4e/1810de5554f8cd9825b47ae46b9990b4/dotnet-runtime-3.1.0-rhel.6-x64.tar.gz
[dotnet-runtime-win-arm.zip]: https://download.visualstudio.microsoft.com/download/pr/49e67b80-c229-4a75-a259-f735499dcfcb/597942224d355986c5a667f3fd955fa2/dotnet-runtime-3.1.0-win-arm.zip
[dotnet-runtime-win-x64.exe]: https://download.visualstudio.microsoft.com/download/pr/71c181aa-e8fc-4581-ab8b-93a5906b75ff/7458c330a88227463eb0721aded45426/dotnet-runtime-3.1.0-win-x64.exe
[dotnet-runtime-win-x64.zip]: https://download.visualstudio.microsoft.com/download/pr/5e1c20ea-113f-47fd-9702-22a8bf1e3974/16bf234b587064709d8e7b58439022d4/dotnet-runtime-3.1.0-win-x64.zip
[dotnet-runtime-win-x86.exe]: https://download.visualstudio.microsoft.com/download/pr/10256f2e-4665-4acb-918b-26c7c85956cd/e562428eb91b894e711cd81b53166575/dotnet-runtime-3.1.0-win-x86.exe
[dotnet-runtime-win-x86.zip]: https://download.visualstudio.microsoft.com/download/pr/31b707c9-0484-48b5-b248-7f22946f88b5/a998787f1b26a7f742c84cbec7f145d2/dotnet-runtime-3.1.0-win-x86.zip

[//]: # ( WindowsDesktop 3.1.0)
[windowsdesktop-runtime-win-x64.exe]: https://download.visualstudio.microsoft.com/download/pr/b7692772-f2fd-4b38-bfc0-fc58948f34f0/1c615597c56348c7b742d2319bc1fe45/windowsdesktop-runtime-3.1.0-win-x64.exe
[windowsdesktop-runtime-win-x86.exe]: https://download.visualstudio.microsoft.com/download/pr/eb453afa-a90b-4782-9a93-9179be59525a/046c6b337c803a359673e35efa2a4cfc/windowsdesktop-runtime-3.1.0-win-x86.exe

[//]: # ( ASP 3.1.0)
[aspnetcore-runtime-linux-arm.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/8c839c0e-a5ae-4254-8d8b-c012528fe601/c147e26bad68f97eacc287a71e01331d/aspnetcore-runtime-3.1.0-linux-arm.tar.gz
[aspnetcore-runtime-linux-arm64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/e7c893c5-726a-40aa-8a13-7ae6f1e3ee4e/8ba7467756a3fb1778f02f1ca98ca1ee/aspnetcore-runtime-3.1.0-linux-arm64.tar.gz
[aspnetcore-runtime-linux-musl-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/f426f14d-7274-4724-b680-c9ee4a473005/d1bf4af95d517902a9a4b0a5973bdea3/aspnetcore-runtime-3.1.0-linux-musl-x64.tar.gz
[aspnetcore-runtime-linux-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/30915c37-fa5a-4930-b4e6-b4130e4596b2/38d531c10dc56950f17f3c604e9a2ebc/aspnetcore-runtime-3.1.0-linux-x64.tar.gz
[aspnetcore-runtime-osx-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/16106b5c-2dd0-429b-ac74-79c7d47fc575/cb9f53870983845f81b740b27d412038/aspnetcore-runtime-3.1.0-osx-x64.tar.gz
[aspnetcore-runtime-win-arm.zip]: https://download.visualstudio.microsoft.com/download/pr/1fdda5b3-554c-4393-8bfe-aaa2d2a84774/a96ee30a1babc1aa47595171d3b7ba79/aspnetcore-runtime-3.1.0-win-arm.zip
[aspnetcore-runtime-win-x64.exe]: https://download.visualstudio.microsoft.com/download/pr/a16689d1-0872-4ef9-a592-406d3038d8f7/cf4f84504385a599f0cb6a5c113ccb34/aspnetcore-runtime-3.1.0-win-x64.exe
[aspnetcore-runtime-win-x64.zip]: https://download.visualstudio.microsoft.com/download/pr/33fb1832-334a-4b72-ae47-ff9d07722cbd/f0b492014f4f5659a57c0f5f42913152/aspnetcore-runtime-3.1.0-win-x64.zip
[aspnetcore-runtime-win-x86.exe]: https://download.visualstudio.microsoft.com/download/pr/74ed410a-d452-4057-bb89-befeccf34b2b/e11a376951914e197c50528e5b20e2ef/aspnetcore-runtime-3.1.0-win-x86.exe
[aspnetcore-runtime-win-x86.zip]: https://download.visualstudio.microsoft.com/download/pr/f491b4ef-8d18-48cb-bf69-621a795e8ab7/ae9b1d2c7cc27eb79eeba87c6ed5d1d8/aspnetcore-runtime-3.1.0-win-x86.zip
[dotnet-hosting-win.exe]: https://download.visualstudio.microsoft.com/download/pr/fa3f472e-f47f-4ef5-8242-d3438dd59b42/9b2d9d4eecb33fe98060fd2a2cb01dcd/dotnet-hosting-3.1.0-win.exe

[//]: # ( SDK 3.1.100 )
[dotnet-sdk-linux-arm.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/67766a96-eb8c-4cd2-bca4-ea63d2cc115c/7bf13840aa2ed88793b7315d5e0d74e6/dotnet-sdk-3.1.100-linux-arm.tar.gz
[dotnet-sdk-linux-arm64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/5a4c8f96-1c73-401c-a6de-8e100403188a/0ce6ab39747e2508366d498f9c0a0669/dotnet-sdk-3.1.100-linux-arm64.tar.gz
[dotnet-sdk-linux-musl-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/58f99511-944c-489b-b7f9-881d594e66cd/51e9fc76a02e580cea065010323c7fa7/dotnet-sdk-3.1.100-linux-musl-x64.tar.gz
[dotnet-sdk-linux-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/d731f991-8e68-4c7c-8ea0-fad5605b077a/49497b5420eecbd905158d86d738af64/dotnet-sdk-3.1.100-linux-x64.tar.gz
[dotnet-sdk-osx-x64.pkg]: https://download.visualstudio.microsoft.com/download/pr/787e81f1-f0da-4e3b-a989-8a199132ed8c/61a8dba81fbf2b3d533562d7b96443ec/dotnet-sdk-3.1.100-osx-x64.pkg
[dotnet-sdk-osx-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/bea99127-a762-4f9e-aac8-542ad8aa9a94/afb5af074b879303b19c6069e9e8d75f/dotnet-sdk-3.1.100-osx-x64.tar.gz
[dotnet-sdk-rhel.6-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/b4a90664-f80c-4747-a159-da54ab4ffc44/85c2ecb3cf510150491ad22641a163b8/dotnet-sdk-3.1.100-rhel.6-x64.tar.gz
[dotnet-sdk-win-arm.zip]: https://download.visualstudio.microsoft.com/download/pr/4c991319-baba-41b1-8ada-3ed527481ed6/b82ed9851b82b4988503b728cb5dac1f/dotnet-sdk-3.1.100-win-arm.zip
[dotnet-sdk-win-x64.exe]: https://download.visualstudio.microsoft.com/download/pr/639f7cfa-84f8-48e8-b6c9-82634314e28f/8eb04e1b5f34df0c840c1bffa363c101/dotnet-sdk-3.1.100-win-x64.exe
[dotnet-sdk-win-x64.zip]: https://download.visualstudio.microsoft.com/download/pr/28a2c4ff-6154-473b-bd51-c62c76171551/ea47eab2219f323596c039b3b679c3d6/dotnet-sdk-3.1.100-win-x64.zip
[dotnet-sdk-win-x86.exe]: https://download.visualstudio.microsoft.com/download/pr/f6fb21ca-cbf8-41a0-87b9-84225ae485cd/7dcd7ed94e6614098edd2f9832bceeee/dotnet-sdk-3.1.100-win-x86.exe
[dotnet-sdk-win-x86.zip]: https://download.visualstudio.microsoft.com/download/pr/8961027c-fc5b-40d8-9f67-b08c55510ef4/99c6723fb3916369d4bb425fa70d691e/dotnet-sdk-3.1.100-win-x86.zip
