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

Connecting to Informix

• AuthScheme: Specifies the type of user authentication to be performed at the server. There are two options:
  • USRIDPWD (default): Provides authentication via unencrypted user credentials (User and Password).
  • EUSRIDPWD: Provides authentication via encrypted user credentials.
• Host: The IP address of the server running Informix.
• Server: The name of the server running Informix.
• Port: The port the Informix server is listening on.
• Database: The name of the Informix database.
• User: The authenticating user.
• Password: The authenticating user's password.