Not a power user by any means.

After following the tutorial here:

Windows Server 2016 - Setup Local Domain Controller
....and restarting the server, an error popped up that there is no internet connection. However opening a browser did connect to and a search called up many listings. Clicking on a link produced nothing. Thinking that maybe it might be a bad idea, I allowed Windows to repair the connection after it showed that there was no DHCP connection.

After Windows made this fix, the domain name and, ip addresses. It had reverted back too I "Obtain and IP address automatically".. I suspected this might happen as this is a home network, and the U-Verse router decides what the IP addresses shall be.

Still thinking I did something wrong or left something out of the process.