Microsoft Authentication Library (MSAL) Preview for .NET, Windows Store, UWP, NetCore, Xamarin Android and iOS
| Conceptual documentation | Getting Started | Sample Code | Library Reference | Support |
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The MSAL library for .NET gives your app the ability to begin using the Microsoft Cloud by supporting Microsoft Azure Active Directory and Microsoft Accounts in a converged experience using industry standard OAuth2 and OpenID Connect. The library also supports Azure AD B2C.
Stable (master branch) |
Nightly (dev branch) |
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| Branch | Status | Notes |
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| dev (VSTS) | Builds the entire MSAL solution | |
| dev (AppVeyor) | Partial build - product assembly and tests only |
This library is suitable for use in a production environment. We provide the same production level support for this library as we do our current production libraries. During the preview we may make changes to the API, internal cache format, and other mechanisms of this library, which you will be required to take along with bug fixes or feature improvements. This may impact your application. For instance, a change to the cache format may impact your users, such as requiring them to sign in again. An API change may require you to update your code. When we provide the General Availability release we will require you to update to the General Availability version within six months, as applications written using a preview version of library may no longer work.
- Windows 7 or greater
- .NET 4.5 or greater
We use Stack Overflow with the community to provide support. We highly recommend you ask your questions on Stack Overflow first and browse existing issues to see if someone has asked your question before.
If you find and bug or have a feature request, please raise the issue on GitHub Issues.
To provide a recommendation, visit our User Voice page.
We enthusiastically welcome contributions and feedback. You can clone the repo and start contributing now. Read our Contribution Guide for more information.
This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.
This library controls how users sign-in and access services. We recommend you always take the latest version of our library in your app when possible. We use semantic versioning so you can control the risk associated with updating your app. As an example, always downloading the latest minor version number (e.g. x.y.x) ensures you get the latest security and feature enhanements but our API surface remains the same. You can always see the latest version and release notes under the Releases tab of GitHub.
If you find a security issue with our libraries or services please report it to [email protected] with as much detail as possible. Your submission may be eligible for a bounty through the Microsoft Bounty program. Please do not post security issues to GitHub Issues or any other public site. We will contact you shortly upon receiving the information. We encourage you to get notifications of when security incidents occur by visiting this page and subscribing to Security Advisory Alerts.
Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT License (the "License");
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Before you can get a token from Azure AD v2.0 or Azure AD B2C, you'll need to register an application. For Azure AD v2.0, use the app registration portal. For Azure AD B2C, checkout how to register your app with B2C.
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For a full sample,
Azure AD v2.0
Azure AD B2C
- Right click on your project > Manage packages.
- Select include prerelease > search msal.
- Select the Microsoft.Identity.Client package > install.
- Create a new PublicClientApplication instance. Make sure to fill in your app/client id
PublicClientApplication myApp = new PublicClientApplication(CLIENT_ID);- Acquire a token
AuthenticationResult authenticationResult = await myApp.AcquireTokenAsync(SCOPES).ConfigureAwait(false);The access token can now be used in an HTTP Bearer request.