8/23/2021

.net For Mac

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In this article, you'll learn how to install .NET on macOS. .NET is made up of the runtime and the SDK. The runtime is used to run a .NET app and may or may not be included with the app. The SDK is used to create .NET apps and libraries. The .NET runtime is always installed with the SDK.

The latest version of .NET is 5.0.

Supported releases

The following table is a list of currently supported .NET releases and the versions of macOS they're supported on. These versions remain supported either the version of .NET reaches end-of-support.

  • A ✔️ indicates that the version of .NET Core is still supported.
  • A ❌ indicates that the version of .NET Core isn't supported.
Operating System.NET Core 2.1.NET Core 3.1.NET 5.0
macOS 11.0 'Big Sur'✔️ 2.1 (Release notes)✔️ 3.1 (Release notes)✔️ 5.0 (Release notes)
macOS 10.15 'Catalina'✔️ 2.1 (Release notes)✔️ 3.1 (Release notes)✔️ 5.0 (Release notes)
macOS 10.14 'Mojave'✔️ 2.1 (Release notes)✔️ 3.1 (Release notes)✔️ 5.0 (Release notes)
macOS 10.13 'High Sierra'✔️ 2.1 (Release notes)✔️ 3.1 (Release notes)✔️ 5.0 (Release notes)
macOS 10.12 'Sierra'✔️ 2.1 (Release notes)❌ 3.1 (Release notes)❌ 5.0 (Release notes)

Unsupported releases

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The following versions of .NET are ❌ no longer supported. The downloads for these still remain published:

  • 3.0 (Release notes)
  • 2.2 (Release notes)
  • 2.0 (Release notes)

Runtime information

The runtime is used to run apps created with .NET. When an app author publishes an app, they can include the runtime with their app. If they don't include the runtime, it's up to the user to install the runtime.

There are three different runtimes you can install on macOS:

ASP.NET Core runtime
Runs ASP.NET Core apps. Includes the .NET runtime.

.NET runtime
This runtime is the simplest runtime and doesn't include any other runtime. It's highly recommended that you install ASP.NET Core runtime for the best compatibility with .NET apps.

SDK information

The SDK is used to build and publish .NET apps and libraries. Installing the SDK includes both runtimes: ASP.NET Core and .NET.

Dependencies

.net For Mac

.NET is supported on the following macOS releases:

.NET Core VersionmacOSArchitecturesMore information
5.0High Sierra (10.13+)x64More information
3.1High Sierra (10.13+)x64More information
3.0High Sierra (10.13+)x64More information
2.2Sierra (10.12+)x64More information
2.1Sierra (10.12+)x64More information

Beginning with macOS Catalina (version 10.15), all software built after June 1, 2019 that is distributed with Developer ID, must be notarized. This requirement applies to the .NET runtime, .NET SDK, and software created with .NET.

The runtime and SDK installers for .NET 5.0 and .NET Core 3.1, 3.0, and 2.1, have been notarized since February 18, 2020. Prior released versions aren't notarized. If you run a non-notarized app, you'll see an error similar to the following image:

For more information about how enforced-notarization affects .NET (and your .NET apps), see Working with macOS Catalina Notarization.

libgdiplus

.NET applications that use the System.Drawing.Common assembly require libgdiplus to be installed.

An easy way to obtain libgdiplus is by using the Homebrew ('brew') package manager for macOS. After installing brew, install libgdiplus by executing the following commands at a Terminal (command) prompt:

Install with an installer

macOS has standalone installers that can be used to install the .NET 5.0 SDK:

Download and manually install

As an alternative to the macOS installers for .NET, you can download and manually install the SDK and runtime. Manual install is usually performed as part of continuous integration testing. For a developer or user, it's generally better to use an installer.

If you install .NET SDK, you don't need to install the corresponding runtime. First, download a binary release for either the SDK or the runtime from one of the following sites:

  • ✔️ .NET 5.0 downloads
  • ✔️ .NET Core 3.1 downloads
  • ✔️ .NET Core 2.1 downloads

Next, extract the downloaded file and use the export command to set variables used by .NET and then ensure .NET is in PATH.

Visual studio.net for mac

To extract the runtime and make the .NET CLI commands available at the terminal, first download a .NET binary release. Then, open a terminal and run the following commands from the directory where the file was saved. The archive file name may be different depending on what you downloaded.

Use the following command to extract the runtime:

Use the following command to extract the SDK:

Tip

The preceding export commands only make the .NET CLI commands available for the terminal session in which it was run.

You can edit your shell profile to permanently add the commands. There are a number of different shells available for Linux and each has a different profile. For example:

  • Bash Shell: ~/.bash_profile, ~/.bashrc
  • Korn Shell: ~/.kshrc or .profile
  • Z Shell: ~/.zshrc or .zprofile
Machine

Edit the appropriate source file for your shell and add :$HOME/dotnet to the end of the existing PATH statement. If no PATH statement is included, add a new line with export PATH=$PATH:$HOME/dotnet.

Also, add export DOTNET_ROOT=$HOME/dotnet to the end of the file.

This approach lets you install different versions into separate locations and choose explicitly which one to use by which application.

Install with Visual Studio for Mac

Visual Studio for Mac installs the .NET SDK when the .NET workload is selected. To get started with .NET development on macOS, see Install Visual Studio 2019 for Mac.

.NET SDK versionVisual Studio version
5.0Visual Studio 2019 for Mac version 8.8 or higher.
3.1Visual Studio 2019 for Mac version 8.4 or higher.
2.1Visual Studio 2019 for Mac version 8.0 or higher.

Install alongside Visual Studio Code

Visual Studio Code is a powerful and lightweight source code editor that runs on your desktop. Visual Studio Code is available for Windows, macOS, and Linux.

While Visual Studio Code doesn't come with an automated .NET installer like Visual Studio does, adding .NET support is simple.

  1. Download and install Visual Studio Code.
  2. Download and install the .NET SDK.
  3. Install the C# extension from the Visual Studio Code marketplace.

Install with bash automation

The dotnet-install scripts are used for automation and non-admin installs of the runtime. You can download the script from the dotnet-install script reference page.

The script defaults to installing the latest long term support (LTS) version, which is .NET Core 3.1. You can choose a specific release by specifying the current switch. Include the runtime switch to install a runtime. Otherwise, the script installs the SDK.

Note

The previous command installs the ASP.NET Core runtime for maximum compatability. The ASP.NET Core runtime also includes the standard .NET runtime.

Docker

Containers provide a lightweight way to isolate your application from the rest of the host system. Containers on the same machine share just the kernel and use resources given to your application.

.NET can run in a Docker container. Official .NET Docker images are published to the Microsoft Container Registry (MCR) and are discoverable at the Microsoft .NET Core Docker Hub repository. Each repository contains images for different combinations of the .NET (SDK or Runtime) and OS that you can use.

Microsoft provides images that are tailored for specific scenarios. For example, the ASP.NET Core repository provides images that are built for running ASP.NET Core apps in production.

For more information about using .NET Core in a Docker container, see Introduction to .NET and Docker and Samples.

Next steps

  • How to check if .NET Core is already installed.
  • Working with macOS Catalina notarization.
  • Tutorial: Get started on macOS.
  • Tutorial: Create a new app with Visual Studio Code.
  • Tutorial: Containerize a .NET Core app.
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This tutorial shows how to create and run a .NET console application using Visual Studio for Mac.

.net

Note

Your feedback is highly valued. There are two ways you can provide feedback to the development team on Visual Studio for Mac:

  • In Visual Studio for Mac, select Help > Report a Problem from the menu or Report a Problem from the Welcome screen, which will open a window for filing a bug report. You can track your feedback in the Developer Community portal.
  • To make a suggestion, select Help > Provide a Suggestion from the menu or Provide a Suggestion from the Welcome screen, which will take you to the Visual Studio for Mac Developer Community webpage.

Prerequisites

  • Visual Studio for Mac version 8.8 or later. Select the option to install .NET Core. Installing Xamarin is optional for .NET development. For more information, see the following resources:

    • Tutorial: Install Visual Studio for Mac.
    • Supported macOS versions.
    • .NET versions supported by Visual Studio for Mac.

Create the app

  1. Start Visual Studio for Mac.

  2. Select New in the start window.

  3. In the New Project dialog, select App under the Web and Console node. Select the Console Application template, and select Next.

  4. In the Target Framework drop-down of the Configure your new Console Application dialog, select .NET 5.0, and select Next.

  5. Type 'HelloWorld' for the Project Name, and select Create.

The template creates a simple 'Hello World' application. It calls the Console.WriteLine(String) method to display 'Hello World!' in the terminal window.

The template code defines a class, Program, with a single method, Main, that takes a String array as an argument:

.net For Mac Os

Main is the application entry point, the method that's called automatically by the runtime when it launches the application. Any command-line arguments supplied when the application is launched are available in the args array.

Run the app

  1. Press (option+command+enter) to run the app without debugging.

  2. Close the Terminal window.

Enhance the app

Enhance the application to prompt the user for their name and display it along with the date and time.

.net For Mac Os

  1. In Program.cs, replace the contents of the Main method, which is the line that calls Console.WriteLine, with the following code:

    This code displays a prompt in the console window and waits until the user enters a string followed by the enter key. It stores this string in a variable named name. It also retrieves the value of the DateTime.Now property, which contains the current local time, and assigns it to a variable named date. And it displays these values in the console window. Finally, it displays a prompt in the console window and calls the Console.ReadKey(Boolean) method to wait for user input.

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  2. Press (option+command+enter) to run the app.

  3. Respond to the prompt by entering a name and pressing enter.

  4. Close the terminal.

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Next steps

In this tutorial, you created a .NET console application. In the next tutorial, you debug the app.