tasklist | findstr <PID>
: Certain NoSQL databases, caching systems, or big data tools use custom five-digit ports in the 11000 range for node-to-node communication or local management dashboards.
Kill the process directly using the listening port tool: kill -9 $(lsof -t -i:11501) Use code with caution. Step 3: Check IP Binding Rules
: Some enterprise or niche software packages default to high-range ports like 11501 to avoid conflicts with common services. Security/Proxy Tools localhost11501
The service is running but not accepting HTTP requests (e.g., it’s a raw TCP server, WebSocket, or HTTPS-only).
To understand localhost11501 , it helps to break it down into its core networking building blocks:
If you try to load http://localhost:11501 in a browser or connect to it via an API client and receive an error (like ERR_CONNECTION_REFUSED ), use the following steps to diagnose the issue. Step 1: Check if the Port is Active tasklist | findstr <PID> : Certain NoSQL databases,
Sometimes a developer terminates a code editor, but the background process fails to close properly, locking up the port. To force-release port 11501 :
This is the standard hostname given to the address of the local computer. It allows a device to connect to its own network services without needing a physical network interface or an internet connection.
Open Activity Monitor and search for the process name. If it isn't listed, manually relaunch the desktop application from your Applications folder. Step 2: Identify Port Conflicts Security/Proxy Tools The service is running but not
: Modern software is rarely built as a single, massive program. Instead, developers break systems into smaller "microservices" that talk to each other. A developer might run an authentication service on port 11500, a payment processing service on port 11501, and a user interface frontend on port 3000.
Accessing http://localhost:11501 would show the NGINX welcome page.