Hi I just finished the basic configuration of a new 2016 SharePoint farm. I went with the standard min roles so I have a front end, search, app, distributed cache, and sql server. I setup the app server to host central admin. When it tried to open the first time I got a 500 internal server error.
After playing around a little I tried changing the account for the central admin application pool from the farm admin account to the SharePoint setup account and it started working. The only difference I can tell is the setup account is in the admin group on the box. I know this is not recommended so I don't want to leave it. Any suggestions?