How To Solve "EADDRINUSE - Address Already In Use"

If you ever run into this problem, you have 2 options:

• Run your application on a different port, or
• Terminate the existing process

Naturally, I'll be covering the latter. 😋

Find the process ID

First things first, we need to identify the process ID of the application that's occupying the port. You can do so with lsof -i :<port number>.

Terminate the process

Terminate the process with kill -9 <PID>.

Windows

If you're on Windows and aren't using WSL, the next best thing is to simply open up your task manager, find the process and end it.