How can I remove the current process/application which is already assigned to a port?

For example: localhost:8080

28 Answers

Step 1:

Open up cmd.exe (note: you may need to run it as an administrator, but this isn't always necessary), then run the below command:

netstat -ano | findstr :<PORT>

(Replace <PORT> with the port number you want, but keep the colon)

The area circled in red shows the PID (process identifier). Locate the PID of the process that's using the port you want.

Step 2:

Next, run the following command:

taskkill /PID <PID> /F

(No colon this time)

Lastly, you can check whether the operation succeeded or not by re-running the command in "Step 1". If it was successful you shouldn't see any more search results for that port number.

I know that is really old question, but found pretty easy to remember, fast command to kill apps that are using port.

Requirements: npm@5.2.0^ version

npx kill-port 8080 

You can also read more about kill-port here:

Step 1 (same is in accepted answer written by KavinduWije):

netstat -ano | findstr :yourPortNumber 

Change in Step 2 to:

tskill typeyourPIDhere 

Note: taskkill is not working in some git bash terminal

There are two ways to kill the processes

Option 01 - Simplest and easiest

Requirement : npm@5.2.0^ version

Open the Command prompt as Administrator and give the following command with the port (Here the port is 8080)

npx kill-port 8080 

Option 02 - Most commonly used

• Step 01

  Open Windows command prompt as Administrator

• Step 02

  Find the PID of the port you want to kill with the below command: Here port is 8080

netstat -ano|findstr "PID :8080" 

TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 18264

• Step 03

  Kill the PID you received above with the below command (In my case PID is 18264)

taskkill /PID 18264 /f 

With Windows 10 default tools:

• Step one:

Open Windows PowerShell as Administrator

• Step two:

Find PID (ProcessID) for port 8080:

netstat -aon | findstr 8080 

TCP 0.0.0.0:8080 0.0.0.0:0 LISTEN 77777

• Step three:

Kill the zombie process:

taskkill /f /pid 77777 

where "77777" is your PID

If you are using GitBash

Step one:

netstat -ano | findstr :8080 

Step two:

taskkill /PID typeyourPIDhere /F 

(/F forcefully terminates the process)

The simplest solution — the only one I can ever remember:

In Windows Powershell

Say we want to stop a process on port 8080

1. Get the process:

netstat -ano | findstr :8080 

2. Stop the process

stop-process 82932 

If you already know the port number, it will probably suffice to send a software termination signal to the process (SIGTERM):

kill $(lsof -t -i :PORT_NUMBER) 

Simple CMD is working me. Easy to remember

find the port number which you want kill and run the below cmd

npx kill-port 8080 

After complete the Port get stopped and getting this message

npx: installed 3 in 13.796s Process on port 8080 killed 

For use in command line:

for /f "tokens=5" %a in ('netstat -aon ^| find ":8080" ^| find "LISTENING"') do taskkill /f /pid %a 

For use in bat-file:

for /f "tokens=5" %%a in ('netstat -aon ^| find ":8080" ^| find "LISTENING"') do taskkill /f /pid %%a 

In Windows PowerShell version 1 or later to stop a process on port 3000 type:

Stop-Process (,(netstat -ano | findstr :3000).split() | foreach {$[$.length-1]}) -Force

As suggested by @morganpdx here`s a more PowerShell-ish, better version:

Stop-Process -Id (Get-NetTCPConnection -LocalPort 3000).OwningProcess -Force

Open command prompt and issue below command

netstat -ano|findstr "PID :8888" 

Output will show the process id occupying the port

Issue below command to kill the PID

taskkill /pid 8912 /f 

You will receive the output as below

SUCCESS: The process with PID 8860 has been terminated. 

If you can use PowerShell on Windows you just need :

Get-Process -Id (Get-NetTCPConnection -LocalPort "8080").OwningProcess | Stop-Process 

For Windows users, you can use the CurrPorts tool to kill ports under usage easily:

I was running zookeeper on Windows and wasn't able to stop ZooKeeper running at 2181 port using zookeeper-stop.sh, so tried this double slash "//" method to taskkill. It worked

 1. netstat -ano | findstr :2181 TCP 0.0.0.0:2181 0.0.0.0:0 LISTENING 8876 TCP [::]:2181 [::]:0 LISTENING 8876 2.taskkill //PID 8876 //F SUCCESS: The process with PID 8876 has been terminated. 

If you're using Windows Terminal then the killing process might be little less tedious. I've been using windows terminal and kill PID works fine for me to kill processes on the port as the new Windows Terminal supports certain bash commands. For example: kill 13300

So, the complete process will look like this-

• Open Windows Terminal
• Type the following command to show processes running on the port you're looking to kill processes. netstat -ano | findstr :PORT
• Type following to kill the process. kill PID

For Example:

PS C:\Users\username> netstat -ano | findstr :4445 TCP 0.0.0.0:4445 0.0.0.0:0 LISTENING 7368 TCP [::]:4445 [::]:0 LISTENING 7368 PS C:\Users\username> kill 7368 PS C:\Users\username> netstat -ano | findstr :4445 PS C:\Users\username> 

See when I typed the first command to list processes on the port it returned empty. That means all processes are killed now.

Update: kill is an alias for Stop-Process. Thanks, @FSCKur for letting us know.

Let's Automate!

If you fall into this issue much often like me, make an .bat file and run it to end process.

create a bat file "killport.bat"

set /P port="Enter port : " echo showing process running with port %port% netstat -ano|findstr "PID :%port%" set /P pid="Enter PID to kill : " taskkill /pid %pid% /f set /P exit="Press any key to exit..." 

Run this file by double clicking and

1. Enter port number (then it will list process with PID)
2. Enter PID to kill

Done

(Optional)

Set to path environment so that you can access this file from anywhere.

Most probably you will know how to add an new path to env. But here's how if you don't

Step 1 of 4

Search ENV on start menu

Step 2 of 4

Select Environment Variables

Step 3 of 4

Select 'path' and click Edit button

Step 4 of 4

Click 'New' add the path where .bat file is stored. Since I saved it on '../Documents/bats' folder I am adding this path. Your path will depend on where you save this file.

Open CMD and test. Remember you filename will the word to run this file. Since I saved the .bat file as 'killport.bat' => 'killport' is the word to run it.

if do enjoy! else share how you done it here

Run cmd as administrator. Then type this code in there.

netstat -ano | findstr :<8080> 

Then you can see the PID run on your port. Then copy that PID number. ( PID is a unique number that helps identify a hardware product or a registered software product.) And type below code line and press enter.

taskkill /PID <Enter the copied PID Number> /F 

You can do by run a bat file:

@ECHO OFF FOR /F "tokens=5" %%T IN ('netstat -a -n -o ^| findstr "9797" ') DO ( SET /A ProcessId=%%T) &GOTO SkipLine :SkipLine echo ProcessId to kill = %ProcessId% taskkill /f /pid %ProcessId% PAUSE 

In case you want to do it using Python: check Is it possible in python to kill process that is listening on specific port, for example 8080?

The answer from Smunk works nicely. I repeat his code here:

from psutil import process_iter from signal import SIGTERM # or SIGKILL for proc in process_iter(): for conns in proc.connections(kind='inet'): if conns.laddr.port == 8080: proc.send_signal(SIGTERM) # or SIGKILL continue 

the first step

netstat -vanp tcp | grep 8888 

example

tcp4 0 0 127.0.0.1.8888 *.* LISTEN 131072 131072 76061 0 tcp46 0 0 *.8888 *.* LISTEN 131072 131072 50523 0 

the second step: find your PIDs and kill them

in my case

sudo kill -9 76061 50523 

netstat -ano | findstr :PORT kill PI 

One line solution using GitBash:

 tskill `netstat -ano | grep LISTENING | findstr :8080 | sed -r 's/(\s+[^\s]+){4}(.*)/\1/'` 

Replace 8080 with the port your server is listening to.

If you need to use it often, try adding to your ~/.bashrc the function:

function killport() { tskill `netstat -ano | findstr LISTENING | findstr :$1 | sed -r 's/^(\s+[^\s]+){4}(\d*)$/\1/'` } 

and simply run

killport 8080 

I wrote a tiny node js script for this. Just run it like this: node killPort.js 8080 or whatever port you need to kill. Save the following to a killPort.js file:

const { exec } = require('child_process'); const fs = require(`fs`); const port = process.argv.length > 2 ? process.argv[2] : ``; if (!port || isNaN(port)) console.log(`port is required as an argument and has to be a number`); else { exec(`netstat -ano | findstr :${port}`, (err, stdout, stderr) => { if (!stdout) console.log(`nobody listens on port ${port}`); else { const res = stdout.split(`\n`).map(s => s.trim()); const pid = res.map(s => s.split(` `).pop()).filter(s => s).pop(); console.log(`Listener of ${port} is found, its pid is ${pid}, killing it...`); exec(`taskkill /PID ${pid} /F`, (err, stdout, stderr) => { if (!stdout) console.log(`we tried to kill it, but not sure about the result, please run me again`); else console.log(stdout); }) } }); } 

If you use powershell 7+ this worked for me. Just add this function in your $PROFILE file.

function killport([parameter(mandatory)] [string] $uport){ if($upid = (Get-NetTCPConnection -LocalPort $uport -ErrorAction Ignore).OwningProcess){kill $upid} } 

then simply use killport 8080

or if you prefer just the command you can try this:

kill $(Get-NetTCPConnection -LocalPort 8761 -ErrorAction Ignore).OwningProcess 

Here is a script to do it in WSL2

PIDS=$(cmd.exe /c netstat -ano | cmd.exe /c findstr :$1 | awk '{print $5}') for pid in $PIDS do cmd.exe /c taskkill /PID $pid /F done 

I am using GitBash and I error like below when ran

taskkill //PID XXXX

ERROR: The process with PID 7420 could not be terminated. Reason: This process can only be terminated forcefully (with /F option).

So used //F like below and worked fine

taskkill //F //PID XXXX

We can avoid this by simple restarting IIS, using the below command:

IISRESET