You could configure the **Single Sign On** of Power Bi with Denodo Platform only through **Kerberos** authentication as mentioned in the [Overview of single sign-on (SSO) for gateways in Power BI](https://learn.microsoft.com/en-us/power-bi/connect-data/service-gateway-sso-overview) Microsoft document. For more information on Configuring SSO through Kerberos authentication with Denodo, you could refer to this [Single Sign-On](https://community.denodo.com/docs/html/document/denodoconnects/latest/en/Denodo%20Power%20BI%20Custom%20Connector%20-%20User%20Manual#h.t9x1wsnu82j:~:text=Single%20Sign%2DOn%20(SSO) section in Denodo Power BI Custom Connector-User Manual.
Also, in general, “**The username and password is incorrect**” error occurs while passing the incorrect Virtual DataPort credentials in the DSN configuration. Hence, please make sure that user credentials are **correct**.
Hope this helps!