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How to Fix Localhost Refused to Connect in Chrome

If Chrome says "localhost refused to connect," it usually means the web server you're trying to reach isn't running, is misconfigured, or a firewall is blocking the connection.

First, ensure your local server (e.g., Apache, Nginx, Node.js, Python's simple HTTP server) is actually started. This is the most common reason. Check its logs for errors.

Next, verify the port. Most development servers default to 80, 8000, 3000, or 8080. Ensure the URL in Chrome matches the port your server is listening on (e.g., 'http://localhost:3000').

Firewall interference can also cause this. Temporarily disable your computer's firewall to see if that resolves it. If it does, you'll need to add an exception for your server application or port.

Browser extensions might interfere. Try opening Chrome in Incognito mode (Ctrl+Shift+N or Cmd+Shift+N) which disables most extensions. If it works, an extension is the culprit; disable them one by one to find it.

Antivirus software can also block connections. Check your antivirus settings for network protection or web shield features that might be interfering.

Finally, check your `hosts` file. While less common for "refused to connect," ensure `127.0.0.1 localhost` is present and uncommented.

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