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 Zscaler Client Connector Portal, go to Administration.
2. In the left-side navigation, go to Client Connector Support.
3. On the App Supportability tab, enable Pre-Populate Client Connector Username.

4. 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 Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) during authentication. ZIA and ZPA 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.