# .NET Core 3.1.200 SDK - March 16, 2020
[.NET Core 3.1.200 SDK](https://dotnet.microsoft.com/download/dotnet-core/3.1) is available for download and usage in your environment. This release includes the [.NET Core 3.1.2](../3.1.2/3.1.2.md) and [ASP.NET Core 3.1.2](../3.1.2/3.1.2.md) Runtimes that shipped in **February 2020**. This release also  ships with [Visual Studio 16.5](https://docs.microsoft.com/visualstudio/releases/2019/release-notes).

* [Downloads](https://dotnet.microsoft.com/download/dotnet-core/3.1)
* [Notable changes in this release](#notable-changes-in-31200-sdk)
* [Known issues](../3.1-known-issues.md)
* [Visual Studio Compatibility](#visual-studio-compatibility)


Your feedback is important and appreciated. We've created an issue at [dotnet/core #4404](https://github.com/dotnet/core/issues/4404) for your questions and comments.


## 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] \| [ARM64 Alpine][dotnet-runtime-linux-musl-arm64.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] \| [ARM64 Alpine][aspnetcore-runtime-linux-musl-arm64.tar.gz] | - |
| 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 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 16.4 | [3.1.102](3.1.2.md) |
| Windows | Visual Studio 2019 version 16.5 | [3.1.200](#downloads) |
| MacOS | Visual Studio for Mac | [Visual Studio for Mac .NET Core Support](https://docs.microsoft.com/visualstudio/mac/net-core-support) |

## 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 repositories have been updated:

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

## Notable Changes in 3.1.200 SDK

.NET Core 3.1.200 SDK release carries following new changes:

* MSBuild now loads tasks with [AssemblyLoadContext](https://docs.microsoft.com/dotnet/api/system.runtime.loader.assemblyloadcontext?view=netcore-3.1) isolation, allowing tasks that have conflicting dependencies to be loaded in the same process [microsoft/msbuild#4916](https://github.com/microsoft/msbuild/pull/4916).
* .NET Core SDK 3.1.200 can build C++ Common Language Infrastructure (CLI) libraries.


[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/3.1/3.1.2/3.1.200-sdk.md
[snap-install]: 3.1.2-install-instructions.md

[checksums-runtime]: https://dotnetcli.blob.core.windows.net/dotnet/checksums/3.1.200-sha.txt
[checksums-sdk]: https://dotnetcli.blob.core.windows.net/dotnet/checksums/3.1.200-sha.txt

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

[dotnet-blog]: https://devblogs.microsoft.com/dotnet/net-core-march-2020/

[//]: # ( Runtime 3.1.2)
[dotnet-runtime-linux-arm.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/30ed47bb-c25b-431c-9cfd-7b942b07314f/5c92af345a5475ca58b6878dd974e1dc/dotnet-runtime-3.1.2-linux-arm.tar.gz
[dotnet-runtime-linux-arm64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/d3ee4d51-5cbf-4591-baf0-f9af7f9a07e7/59fa68462184d031275c2fa09cdf375d/dotnet-runtime-3.1.2-linux-arm64.tar.gz
[dotnet-runtime-linux-musl-arm64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/47b64547-75e5-43dc-9e2f-66e9d6b9d9ee/869b5417d9d7e4d141f9d2bdeb6b4e36/dotnet-runtime-3.1.2-linux-musl-arm64.tar.gz
[dotnet-runtime-linux-musl-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/21042b9d-8eca-497e-894b-97dde4a4e5d1/c486b0bec79041bc99619756017ad124/dotnet-runtime-3.1.2-linux-musl-x64.tar.gz
[dotnet-runtime-linux-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/38269fba-9fdb-4723-a14c-067cc316827d/53e4161da346d70404375fb8804ee91a/dotnet-runtime-3.1.2-linux-x64.tar.gz
[dotnet-runtime-osx-x64.pkg]: https://download.visualstudio.microsoft.com/download/pr/722d2a42-95c2-4555-ac7a-ec98313984e1/44979d85ec12073d69b3b64feec68ea6/dotnet-runtime-3.1.2-osx-x64.pkg
[dotnet-runtime-osx-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/f58e9293-6600-4de4-a9a8-53951e05ef4f/48d982fbd1d96d818474229a3da22672/dotnet-runtime-3.1.2-osx-x64.tar.gz
[dotnet-runtime-rhel.6-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/420238c8-c86c-4936-91cd-71afe82089a3/af53c9881a098c97c9be7815db0053a8/dotnet-runtime-3.1.2-rhel.6-x64.tar.gz
[dotnet-runtime-win-arm.zip]: https://download.visualstudio.microsoft.com/download/pr/8efe160b-187d-4efe-bef1-bb1aaa0cadf6/5127ae7085f9f0c1dcc8e479ced919a5/dotnet-runtime-3.1.2-win-arm.zip
[dotnet-runtime-win-x64.exe]: https://download.visualstudio.microsoft.com/download/pr/cfe420d5-084c-4590-b387-f89f3387d4c9/db4c577b995c54dee0530d8230e87145/dotnet-runtime-3.1.2-win-x64.exe
[dotnet-runtime-win-x64.zip]: https://download.visualstudio.microsoft.com/download/pr/12c4e2f0-eda2-42ca-908e-fcdb68550a5f/ca19066eba7c09b8c781ae7a84a7ba8d/dotnet-runtime-3.1.2-win-x64.zip
[dotnet-runtime-win-x86.exe]: https://download.visualstudio.microsoft.com/download/pr/dfedf8a5-c3cd-4b69-a5eb-8f9994e810f7/feeead4b3ae3b9e003917797c8356675/dotnet-runtime-3.1.2-win-x86.exe
[dotnet-runtime-win-x86.zip]: https://download.visualstudio.microsoft.com/download/pr/541f44b0-cda8-4559-9cff-860fca619767/599bc8f47a85a5c2892d3540c7b7dd6f/dotnet-runtime-3.1.2-win-x86.zip

[//]: # ( WindowsDesktop 3.1.2)
[windowsdesktop-runtime-win-x64.exe]: https://download.visualstudio.microsoft.com/download/pr/3240250e-6fe0-4258-af69-85abef6c00de/e01ee0af6c65d894f4a02bdf6705ec7b/windowsdesktop-runtime-3.1.2-win-x64.exe
[windowsdesktop-runtime-win-x86.exe]: https://download.visualstudio.microsoft.com/download/pr/b824906f-bd6e-4067-86a6-95c61620674d/cfcdab84a01cee94fdaa31271c3d4d47/windowsdesktop-runtime-3.1.2-win-x86.exe

[//]: # ( ASP 3.1.2)
[aspnetcore-runtime-linux-arm.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/8ccacf09-e5eb-481b-a407-2398b08ac6ac/1cef921566cb9d1ca8c742c9c26a521c/aspnetcore-runtime-3.1.2-linux-arm.tar.gz
[aspnetcore-runtime-linux-arm64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/ec985ae1-e15c-4858-b586-de5f78956573/f585f8ffc303bbca6a711ecd61417a40/aspnetcore-runtime-3.1.2-linux-arm64.tar.gz
[aspnetcore-runtime-linux-musl-arm64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/927b34aa-08c7-411a-b1a1-1a0dbe28cb51/446dbeccd8130a18f6a1885a51d1babe/aspnetcore-runtime-3.1.2-linux-musl-arm64.tar.gz
[aspnetcore-runtime-linux-musl-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/d9ea89f5-935b-47e0-8734-118f8ea6d812/b84792a3ae72add68cd1dcfb9aebeaae/aspnetcore-runtime-3.1.2-linux-musl-x64.tar.gz
[aspnetcore-runtime-linux-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/2d72ee67-ac4d-42c6-97d9-a26a28201fc8/977ad14b99b6ed03dcefd6655789e43a/aspnetcore-runtime-3.1.2-linux-x64.tar.gz
[aspnetcore-runtime-osx-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/9593b373-38a1-454e-844f-da3b5d47b1f8/e6f69a1dda1af567079d949c63c5be85/aspnetcore-runtime-3.1.2-osx-x64.tar.gz
[aspnetcore-runtime-win-arm.zip]: https://download.visualstudio.microsoft.com/download/pr/b46a8ae4-63d2-4d3e-a230-71bd898b1f6d/b4fba45bad2e853c3a3dc687a459667e/aspnetcore-runtime-3.1.2-win-arm.zip
[aspnetcore-runtime-win-x64.exe]: https://download.visualstudio.microsoft.com/download/pr/326b33d1-6bbd-4149-ba35-c94784700674/c06386c2b09401fa94f9595617899d5d/aspnetcore-runtime-3.1.2-win-x64.exe
[aspnetcore-runtime-win-x64.zip]: https://download.visualstudio.microsoft.com/download/pr/6cc3f6a7-3a0f-441c-82a2-104fa93ef8b6/3c1395461545eb5321eb2816d4b3fecf/aspnetcore-runtime-3.1.2-win-x64.zip
[aspnetcore-runtime-win-x86.exe]: https://download.visualstudio.microsoft.com/download/pr/2c8e520e-d705-4b11-8854-518546133e27/13354ed8b42d8c2c52f75d7acffd0be4/aspnetcore-runtime-3.1.2-win-x86.exe
[aspnetcore-runtime-win-x86.zip]: https://download.visualstudio.microsoft.com/download/pr/02ee0d2a-92ea-4be2-bbfe-fe98a35bf1b6/bf581b5aebbf1825997b668310672fc5/aspnetcore-runtime-3.1.2-win-x86.zip
[dotnet-hosting-win.exe]: https://download.visualstudio.microsoft.com/download/pr/dd119832-dc46-4ccf-bc12-69e7bfa61b18/990843c6e0cbd97f9df68c94f6de6bb6/dotnet-hosting-3.1.2-win.exe

[//]: # ( SDK 3.1.200 )
[dotnet-sdk-linux-arm.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/21a124fd-5bb7-403f-bdd2-489f9d21d695/b58fa90d19a5a5124d21dea94422868c/dotnet-sdk-3.1.200-linux-arm.tar.gz
[dotnet-sdk-linux-arm64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/781cb53b-046c-45fb-b18e-97ad65ff61a0/5c6ce7f4e031dad7cca0fdd5bcf4335b/dotnet-sdk-3.1.200-linux-arm64.tar.gz
[dotnet-sdk-linux-musl-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/fe5055c2-985b-4c56-a192-5115080cd9d1/cd04566572be946b8d13aa3a359b0d4c/dotnet-sdk-3.1.200-linux-musl-x64.tar.gz
[dotnet-sdk-linux-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/daec2daf-b458-4ae1-9046-b8ba09b5fb49/733e2d73b41640d6e6bdf1cc6b9ef03b/dotnet-sdk-3.1.200-linux-x64.tar.gz
[dotnet-sdk-osx-x64.pkg]: https://download.visualstudio.microsoft.com/download/pr/fd4c60cd-04a0-4175-ad80-e05d3d90e45e/e7e55bd77cdd6cc99c4ff37dc6fe1ce2/dotnet-sdk-3.1.200-osx-x64.pkg
[dotnet-sdk-osx-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/3512b211-e37f-485e-86f0-2a19cdf9524f/ef4ed10c27c3aa1b8e092e37bb105d56/dotnet-sdk-3.1.200-osx-x64.tar.gz
[dotnet-sdk-rhel.6-x64.tar.gz]: https://download.visualstudio.microsoft.com/download/pr/088fb73b-1465-4dba-bf98-920293ddfd71/3ef0d1c6f5bd04080b66f97262136bb0/dotnet-sdk-3.1.200-rhel.6-x64.tar.gz
[dotnet-sdk-win-arm.zip]: https://download.visualstudio.microsoft.com/download/pr/2e3f3555-ca32-47d0-a452-5af576b5cf56/6a7fbd81a327d2f7e42218e3ca35c75a/dotnet-sdk-3.1.200-win-arm.zip
[dotnet-sdk-win-x64.exe]: https://download.visualstudio.microsoft.com/download/pr/43660ad4-b4a5-449f-8275-a1a3fd51a8f7/a51eff00a30b77eae4e960242f10ed39/dotnet-sdk-3.1.200-win-x64.exe
[dotnet-sdk-win-x64.zip]: https://download.visualstudio.microsoft.com/download/pr/ac85ccb0-e761-489f-b5dd-ba5e52735c2b/dd89fcc72092ff6fc7f5f4cb9eea0de4/dotnet-sdk-3.1.200-win-x64.zip
[dotnet-sdk-win-x86.exe]: https://download.visualstudio.microsoft.com/download/pr/05b7bc3e-69b2-4226-ad11-db472130e6e8/50e04d3ed87cde4a7aa2d591051bfafb/dotnet-sdk-3.1.200-win-x86.exe
[dotnet-sdk-win-x86.zip]: https://download.visualstudio.microsoft.com/download/pr/cc20e4db-6503-4e2b-8079-180a2f2337a5/1ac3552de7b83fba030496920de3b584/dotnet-sdk-3.1.200-win-x86.zip


[//]: # ( Symbols )
