This section describes how to edit the DSN configuration and then authenticate and connect to Marketo APIs.

DSN Configuration

You can use the Microsoft ODBC Data Source Administrator to edit the DSN configuration. Note that the installation process creates a both a user DSN and a system DSN, as described in Installing the Connector.

Note: The connector stores connection information in the Windows registry. To ensure that the connector can write to the registry, either run Power BI as an administrator or use a User DSN for your connection instead of a System DSN.

User DSN

Complete the following steps to edit the DSN configuration:

1. Select Start > Search, and enter ODBC Data Sources in the Search box.
2. Choose the version of the ODBC Administrator that corresponds to the bitness of your Power BI Desktop installation (32-bit or 64-bit).
3. Select the system data source and click Configure.
4. Edit the information on the Connection tab and click OK.

System DSN

Configure the system DSN the same way as the user DSN, except you will need to switch to the System DSN tab before performing Step 3.

If you're using Power BI's On-Premises Data Gateway with Standard mode, you must use the system DSN.

You must also specify a valid location for OAuthSettingsLocation (a path where OAuth credentials are locally stored to avoid repeated OAuth prompts).

This is because the Standard mode runs on service mode and can only access permitted locations, such as C:\Windows\ServiceProfiles\PBIEgwService\AppData\Local\Microsoft\On-premises data gateway.

Connecting to Marketo

The following connection options are required when connecting to Marketo.

• URL: The URL of the REST API Service. You can locate this in Admin -> Integration -> Web Services -> REST API. Example values: https://123-abc-456.mktorest.com/ or https://123-abc-456.mktorest.com/rest.
• OAuthClientId: The OAuth Client ID associated with your custom service.
• OAuthClientSecret: The OAuth Client Secret associated with your custom service.

For additional connection options, see Connection String Options.

Obtaining OAuth Credentials

Before obtaining OAuth credentials you need to create a custom service if you do not already have one. To do so follow the instructions provided in Creating a Custom Service.

To obtain OAuth credentials for a custom service:

1. Go to the Admin tab.
2. Click on the LaunchPoint option.
3. Select the service and click on View Details.
4. Marketo displays a window that shows the authentication credentials. Use "Client Id" as the value for OAuthClientId and "Client Secret" for OAuthClientSecret.