Software⏱️ 2 min read📅 2026-05-31

How to Fix: nginx - nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)

nginx error address already in use

Quick Answer: Check if another process is using port 80 and try to restart nginx with the -s reload option instead of -s stop.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🛠️ Step-by-Step Verified Fixes
  3. 💡 Conclusion

All of a sudden, you're getting the below nginx error: nginx: [emerg] bind() to [::]:80 failed (98: Address already in use). This occurs when another process is using port 80 and prevents nginx from starting.

🛑 Root Causes of the Error

  • Another process is using port 80.

🛠️ Step-by-Step Verified Fixes

Method 1: Checking and Stopping Other Processes Using Port 80

  1. Step 1: Use the netstat -tlnp | grep 80 command to identify which process is using port 80.

Method 2: Stopping and Restarting Nginx

  1. Step 1: Stop the current nginx process by running sudo service nginx stop (or netstop on Windows).

Method 3: Using Systemd to Manage Nginx

  1. Step 1: Use the sudo systemctl stop nginx command (on Linux) or netstop (on Windows).

💡 Conclusion

By identifying and stopping the process using port 80, you should be able to resolve the error and get your nginx server up and running again.

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