Getting Your Client ID for Delegated Authentication

This topic describes functionality that will be obsolete. This functionality is provided only to support legacy applications. Live Connect incorporates features that provide equivalent functionality.

To implement Windows Live ID Delegated Authentication, you must register your Web site with Microsoft® as an application and receive a client ID for use with the service.

Only a person who has a valid Windows Live ID can register an application and receive a client ID. After you have registered your application, it can access information from other Windows Live ID services. You can sign in and change most of your application's registration settings at any time.

The Windows Live application management site assists you with the registration process, issues your client ID to you, and provides a place where you can continue to manage all the applications you register.

When you register an application, you must supply a domain name in which the application is located. This domain name uniquely identifies your application in Windows Live ID, so multiple applications cannot share the same domain name.

To get your client ID

  1. Go to the Windows Live application management site.
  2. Sign in by using your Windows Live ID.
    If this is your first visit to this site, you will see several pages that configure your Windows Live ID for use with the site.
  3. Click Add an application.
  4. Provide the following information in the form on the Connect your application to Windows Live page.

    Item Description

    Application Name

    A unique and friendly name that you use to refer to your application. We recommend that you specify a human-readable name.

    Application type

    For Delegated Authentication, you will select the Web application radio button.For information about other application types please see Windows Live Messenger Connect.


    The domain name of your application. For most applications, this domain name must be a fully qualified Domain Name System (DNS) name that is unique to your application.

    After you have specified a domain name for your application, it cannot be changed.
  5. Click I accept. After your application has been created, the Summary page appears. This page contains the following information about your site:
    • Client ID. A 16-character string that represents your application. Record this string for later use.
    • Secret key. A security key that Windows Live ID uses to encrypt and sign all tokens that it sends to your site. You should record this key, but we recommend that you do not store it in the same location as its corresponding client ID.

To e complete the integration of your application with Windows Live, you must specify additional settings and publish your application. Click the Essentials link under the box that displays your client ID and secret key.

Whenever you want to retrieve or change your application data, return to the Windows Live application management site. Sign in with the Windows Live ID account that you used during registration to see and manage your application projects.

Other Resources

Live Connect