PORT 5174 / TCPDev & LocalhostExposure Risk: Low

Port 5174: Vite Fallback Dev Server — Secondary Vite HMR Server

Automatically selected by Vite when default port 5173 is already occupied by another running frontend instance.

Default Service

Vite Fallback Dev Server

Process: node

Transport Protocol

TCP

IANA Registered Port 5174

Docker Port Flag

-p 5174:5174

Container to Host Mapping

How to Check & Kill Process on Port 5174 (EADDRINUSE Fix)

macOS & Linux (lsof / kill)

# Find process using port 5174
sudo lsof -i :5174

# Instantly kill process on port 5174
lsof -ti:5174 | xargs kill -9

Windows (PowerShell & CMD)

# Find PID listening on port 5174
netstat -ano | findstr :5174

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

Cross-Platform Node.js One-Liner

# Kill port 5174 via npx
npx kill-port 5174

# Or diagnose via Castov CLI
npx castov fix "EADDRINUSE :::5174"

Linux Firewall (UFW) & Connectivity Test

# Test if port 5174 is reachable
nc -zv localhost 5174

# Allow or deny port 5174 in UFW
sudo ufw allow 5174/tcp

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Frequently Asked Questions about Port 5174

What is Port 5174 used for?

Port 5174 is the standard network port for Vite Fallback Dev Server (Secondary Vite HMR Server) operating over TCP. The typical system daemon or process is node.

How do I kill a process running on Port 5174 (EADDRINUSE)?

On macOS and Linux, run: lsof -ti:5174 | xargs kill -9 (or npx kill-port 5174). On Windows PowerShell/CMD, run: netstat -ano | findstr :5174 and then taskkill /PID <PID> /F.

Is it safe to expose Port 5174 to the internet?

Port 5174 has a Low security risk profile. Automatically selected by Vite when default port 5173 is already occupied by another running frontend instance.