Error getting Microsoft Entra Id (AAD) Token using ADF - 404 : NotFound

I'm trying to get an AAD token so that I can use in another Web activity to refresh PBI datasets.

However, I'm getting this error when trying to get an AAD Token:.

Invoking endpoint failed with HttpStatusCode - '404 : NotFound', message - 'The requested endpoint(url) does not exist on the server. Please verify the request server and retry.'

This is what the Web Activity looks like.

The URL is:

https://login.microsoftonline.com/@{pipeline().globalParameters.TenantId}/oauth2/v2.0/token'

The Body is:

@concat(
    'grant_type=client_credentials'
    ,'&resource=https://graph.microsoft.com/.default'
    ,'&client_id='
    ,activity('Get SP ClientId').output.value
    ,'&client_secret='
    ,encodeUriComponent(activity('Get SP Secret').output.value)
)

I've tried https://analysis.windows.net/powerbi/api for the Resource and I still get the same error.

The input for the Web Activity looks like this:

{
    "method": "POST",
    "headers": {
        "Content-Type": "application/x-www-form-urlencoded"
    },
    "url": "https://login.microsoftonline.com/<tenant id>/oauth2/v2.0/token'",
    "body": "grant_type=client_credentials&resource=https://graph.microsoft.com/.default&client_id=<client id>&client_secret=<client secret>"
}

The error occurred as your URL includes one extra quote and you are using resource parameter with v2.0 token endpoint.

Initially, I too got same error when I tried to get access token by passing same values as you:

To resolve the error, you need to use below modified parameters:

URL: https://login.microsoftonline.com/tenantId/oauth2/v2.0/token

Method: POST

Body:

@concat(
    'grant_type=client_credentials'
    ,'&scope=https://graph.microsoft.com/.default'
    ,'&client_id='
    ,activity('Get SP ClientId').output.value
    ,'&client_secret='
    ,encodeUriComponent(activity('Get SP Secret').output.value)
)

Input:

Output:

Note that, this token will only work to call Microsoft Graph API as the scope is https://graph.microsoft.com/.default.

To get access token for Power BI, you need to change your scope value by modifying Body like this:

@concat(
    'grant_type=client_credentials'
    ,'&scope=https://analysis.windows.net/powerbi/api/.default'
    ,'&client_id='
    ,activity('Get SP ClientId').output.value
    ,'&client_secret='
    ,encodeUriComponent(activity('Get SP Secret').output.value)
)

Input:

Output:

You can now use this access token to make requests to Power BI API.