Localhost11501 Link

What are you trying to run? What operating system (Windows, Mac, Linux) are you using? What exact error message does your browser display?

It's possible that another application is already using port 11501, preventing your intended service from binding to it. Use the same lsof or netstat command to see the PID of the process using the port. Once you have the PID, identify the conflicting application and either stop it or configure it to use a different port.

Sharing a localhost:11501 link with another person for them, because localhost on their machine points to their computer, not yours. This is a common source of confusion for beginners. localhost11501 link

Many modern front-end frameworks (React, Vue, Svelte, Angular) start a hot-reload dev server on a random high port. Examples:

Find your application's configuration file (e.g., .env , config.json , server.xml , etc.) and locate the setting for its network port. Confirm it is set to 11501 . What are you trying to run

version: '3' services: web: image: nginx ports: - "11501:80"

If you have a frontend on localhost:3000 trying to fetch from localhost:11501 , browsers may block it due to CORS unless the server on 11501 includes appropriate CORS headers. It's possible that another application is already using

Type http://127.0.0.1:11501 directly into your browser's address bar instead.

Kill the existing process via Terminal/Command Prompt or assign a new port. System security flags the internal port traffic.