In this case, it’s okay, because it’s my web server that is using port 8000, I could confirm that by opening the browser at localhost:8000, but if it were another program, this would let you know.Īnother option is to use a free network monitoring software such as CurrPorts, which displays the list of used TCP/IP and UDP ports on your local computer. Output would look like this, telling me that something is already using the port:
Then run ‘ netstat – anb | findstr :80‘ command, or any other port.įor example, my PHP code is running in my browser on port 8000, to see if anything is using port 8000, I can run ‘ netstat – anb | findstr : 8000‘ command in command prompt. In windows, go to Start / Accessories, then right click on ‘Command Prompt’, in the menu click on ‘Run as Administrator’, just like this: For anyone who ever experiences this kind of issue, or whenever you suspect that something else is using one of the ports, please follow these instructions to resolve the problem and find which program is using a specific Windows port. If you experience a python – Error: That port is already in use, or Apache’s: Port 80 in use by “Unable to open process”, it’s very likely that another program is already using the port.
