--- title: "Pre-requisites to work with DAP on OS" slug: "pre-requisites-to-work-with-whatfix-hub" updated: 2026-08-06T15:29:48Z published: 2026-08-06T15:29:48Z canonical: "support.whatfix.com/pre-requisites-to-work-with-whatfix-hub" --- > ## Documentation Index > Fetch the complete documentation index at: https://support.whatfix.com/llms.txt > Use this file to discover all available pages before exploring further. # Pre-requisites to work with DAP on OS Complete the following steps before starting with DAP on OS: Step 1: Whitelist trusted Whatfix domains Whitelist specific domains to enable your applications to communicate with Whatfix and display content to end users. For more information, see [What are the trusted Whatfix domains to whitelist?](/hub/docs/what-are-the-trusted-whatfix-domains-to-whitelist){target=`_blank`} Step 2: Install the required applications After whitelisting the required domains, [install DAP on OS](/hub/docs/installation-guide){target=`_blank`} and configure it on your desktop.