This is the stage to join one's server. If the connection is successful, then others will also be able to join this server. Run Minecraft 1.16.5 Hit Multiplayer and Proceed (if prompted) ...

This article is a guide on how to setup a Java Edition server on a PC. Read: How to start a Minecraft 1.16.5 Server (Windows 2021) Chart New Territories with the ultimate Minecraft Seed Generator!