Yammer signs users in with their Yammer account — Microsoft's enterprise social network, now folded into Viva Engage. Use it for internal tools in organizations that still run on it.

## Copy the redirect URI

In the [Authdog console](https://console.authdog.com), select the project and environment, open **Authentication > Providers**, find **Yammer**, and click **Enable**. Copy the redirect URI shown in the form:

```url
https://identity.authdog.com/api/v1/callback/<connectionId>
```

## Create the application

1. Register a client at [Yammer's developer page](https://www.yammer.com/client_applications).
2. Set the **Redirect URI** to the redirect URI from Authdog.
3. Copy the **Client ID** and **Client Secret**.

## Configure Authdog

| Field | Value |
| --- | --- |
| **Client ID** | The client identifier from the provider |
| **Client Secret** | The client secret from the provider |

Save, then toggle the connection **active**.

## What Yammer returns

Authdog requests the provider's default scopes and reads the profile from `https://www.yammer.com/api/v1/users/current.json`.

The current-user endpoint returns the Yammer user id, full name, email, and network.

Yammer identities are network-scoped, and Microsoft has been migrating them into Viva Engage. For new deployments, prefer [Microsoft](/docs/connectors/microsoft) or an [Enterprise SSO](/docs/sso) connection to Entra ID.

## Test it

1. Open your environment's hosted sign-in page, or link to `https://identity.authdog.com/api/v1/signin/<connectionId>`.
2. Select the Yammer button and complete the flow.
3. Confirm the user appears under **Users** in the console with a Yammer identity linked.

## Troubleshooting

| Symptom | Cause |
| --- | --- |
| `invalid_client` | The client was registered in a different Yammer network |
| Redirect or callback URL error | The URI registered with the provider does not match Authdog's exactly |
| Works in one environment only | Each environment has its own `connectionId`, and so its own redirect URI to register |

## Related

| Read | To learn how to |
| --- | --- |
| [Connectors](/docs/connectors) | Set up any other social provider |
| [Microsoft](/docs/connectors/microsoft) | Use the current Microsoft identity instead |