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functions-install-core-tools.md

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author ggailey777
ms.service azure-functions
ms.topic include
ms.date 11/14/2023
ms.author glenga

Install the Azure Functions Core Tools

The recommended way to install Core Tools depends on the operating system of your local development computer.

Windows

The following steps use a Windows installer (MSI) to install Core Tools v4.x. For more information about other package-based installers, see the Core Tools readme.

Download and run the Core Tools installer, based on your version of Windows:

If you previously used Windows installer (MSI) to install Core Tools on Windows, you should uninstall the old version from Add Remove Programs before installing the latest version.

Tip

To install Core Tools on Windows Subsystem for Linux (WSL), follow the instructions on the Linux tab.

macOS

The following steps use Homebrew to install the Core Tools on macOS.

  1. Install Homebrew, if it's not already installed.

  2. Install the Core Tools package:

    brew tap azure/functions
brew install azure-functions-core-tools@4
# if upgrading on a machine that has 2.x or 3.x installed:
brew link --overwrite azure-functions-core-tools@4

Linux

The following steps use APT to install Core Tools on your Ubuntu/Debian Linux distribution. For other Linux distributions, see the Core Tools readme.

  1. Install the Microsoft package repository GPG key, to validate package integrity:

    curl https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > microsoft.gpg
sudo mv microsoft.gpg /etc/apt/trusted.gpg.d/microsoft.gpg

  2. Set up the APT source list before doing an APT update.

    Ubuntu
    sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-ubuntu-$(lsb_release -cs 2>/dev/null)-prod $(lsb_release -cs 2>/dev/null) main" > /etc/apt/sources.list.d/dotnetdev.list'
    Debian
    sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/debian/$(lsb_release -rs 2>/dev/null | cut -d'.' -f 1)/prod $(lsb_release -cs 2>/dev/null) main" > /etc/apt/sources.list.d/dotnetdev.list'

  3. Check the /etc/apt/sources.list.d/dotnetdev.list file for one of the appropriate Linux version strings in the following table:

    Linux distribution Version
    Debian 12 bookworm
    Debian 11 bullseye
    Debian 10 buster
    Debian 9 stretch
    Ubuntu 24.04 noble
    Ubuntu 22.04 jammy
    Ubuntu 20.04 focal
    Ubuntu 19.04 disco
    Ubuntu 18.10 cosmic
    Ubuntu 18.04 bionic
    Ubuntu 17.04 zesty
    Ubuntu 16.04/Linux Mint 18 xenial

  4. Start the APT source update:

    sudo apt-get update

  5. Install the Core Tools package:

    sudo apt-get install azure-functions-core-tools-4