You can configure Zscaler Client Connector to automatically populate the username field for your organization’s IdP login form using either JavaScript or the login_hint parameter.

To configure automatic username population:

1. In the Admin Portal, go to Infrastructure > Connectors > Client > App Supportability.
2. On the App Supportability tab, enable Pre-Populate Client Connector Username.

3. Select from the following options:

   • Using Javascript: Use this option to have Zscaler Client Connector use Javascript in the IdP page during the SAML workflow to autofill the username field for your organization’s IdP login form.
   • Using login_hint SAML attribute: Use this option to have Zscaler Client Connector send the login_hint parameter to both Internet & SaaS and Private Applications during authentication. Internet & SaaS and Private Applications pass the login_hint parameter to the IdP as a SAML Subject (NAMEID) to pre-populate the user name.

   If you select both options, the login_hint parameter takes precedence over Javascript.