PORT 5173 / TCPDev & LocalhostExposure Risk: Low

Port 5173: Vite Dev Server — Vite Frontend Build Tool (React, Vue, Svelte)

Default hot-module-replacement (HMR) development server port for Vite.

Default Service

Vite Dev Server

Process: node

Transport Protocol

TCP

IANA Registered Port 5173

Docker Port Flag

-p 5173:5173

Container to Host Mapping

How to Check & Kill Process on Port 5173 (EADDRINUSE Fix)

macOS & Linux (lsof / kill)

# Find process using port 5173
sudo lsof -i :5173

# Instantly kill process on port 5173
lsof -ti:5173 | xargs kill -9

Windows (PowerShell & CMD)

# Find PID listening on port 5173
netstat -ano | findstr :5173

# Force kill by PID
taskkill /PID <PID_NUMBER> /F

Cross-Platform Node.js One-Liner

# Kill port 5173 via npx
npx kill-port 5173

# Or diagnose via Castov CLI
npx castov fix "EADDRINUSE :::5173"

Linux Firewall (UFW) & Connectivity Test

# Test if port 5173 is reachable
nc -zv localhost 5173

# Allow or deny port 5173 in UFW
sudo ufw allow 5173/tcp

Frequently Asked Questions about Port 5173

What is Port 5173 used for?

Port 5173 is the standard network port for Vite Dev Server (Vite Frontend Build Tool (React, Vue, Svelte)) operating over TCP. The typical system daemon or process is node.

How do I kill a process running on Port 5173 (EADDRINUSE)?

On macOS and Linux, run: lsof -ti:5173 | xargs kill -9 (or npx kill-port 5173). On Windows PowerShell/CMD, run: netstat -ano | findstr :5173 and then taskkill /PID <PID> /F.