When you sign in to a Tableau Server site from Tableau Desktop and search for a published data source, you will see all the data sources published to the site within the folders to which you have access. You will not see data sources published to other sites or folders that you do not have permission to view. You can also filter your search by project, owner, or tag. References: https://help.tableau.com/current/pro/desktop/en-us
/connect_basic.htm https://help.tableau.com/current/pro/desktop/en-us/connect_tableauserver.htm When signed in to Tableau Server from Tableau Desktop, you'll only be able to see the data sources that have been published to the site and are within the folders that you have been granted access to. Tableau's permission and project structure mean that you won't see all data sources from the entire server unless you have permissions to do so.