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Quickstart: Sign in users and get an access token in a Node.js web app using the auth code flow

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Quickstart: Add authentication to a Node.js web app with MSAL Node

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In this quickstart, you download and run a code sample that demonstrates how a Node.js web app can sign in users by using the authorization code flow. The code sample also demonstrates how to get an access token to call Microsoft Graph API.

See How the sample works for an illustration.

This quickstart uses the Microsoft Authentication Library for Node.js (MSAL Node) with the authorization code flow.

Prerequisites

Step 1: Configure the application in Azure portal

For the code sample for this quickstart to work, you need to create a client secret and add the following reply URL: http:/> /localhost:3000/redirect.

Make this change for me

Already configured Your application is configured with these > attributes.

Step 2: Download the project

Run the project with a web server by using Node.js.

Download the code sample

Step 3: Your app is configured and ready to run

Run the project by using Node.js.

  1. To start the server, run the following commands from within the project directory:

    npm install
npm start

  2. Go to http://localhost:3000/.

  3. Select Sign In to start the sign-in process.

    The first time you sign in, you're prompted to provide your consent to allow the application to access your profile and sign you in. After you're signed in successfully, you will see a log message in the command line.

More information

How the sample works

The sample hosts a web server on localhost, port 3000. When a web browser accesses this site, the sample immediately redirects the user to a Microsoft authentication page. Because of this, the sample does not contain any HTML or display elements. Authentication success displays the message "OK".

MSAL Node

The MSAL Node library signs in users and requests the tokens that are used to access an API that's protected by Microsoft identity platform. You can download the latest version by using the Node.js Package Manager (npm):

npm install @azure/msal-node

Next steps

Adding Auth to an existing web app - GitHub code sample >