[windows] How do I kill the process currently using a port on localhost in Windows?

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

For example: localhost:8080

This question is related to windows cmd localhost port command-prompt

The answer is


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.


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


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

If you are using GitBash

Step one:

netstat -ano | findstr :8080

Step two:

taskkill /PID typeyourPIDhere /F 

(/F forcefully terminates the process)


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

Result for Windows Command Prompt

In my case, 8080 is the port I want to kill
And 18264 is the PID listening on port 8080
So the task you have to kill is the PID for that particular port

C:\Users\Niroshan>netstat -ano|findstr "PID :8080"

Proto Local Address Foreign Address State PID
TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 18264

taskkill /PID 18264 /f


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

IISRESET

If you can use PowerShell on Windows you just need :

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

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.

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

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


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

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

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


netstat -ano | findstr :PORT
kill PI

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)

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

Requirements: [email protected]^ version

npx kill-port 8080

You can also read more about kill-port here: https://www.npmjs.com/package/kill-port


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

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

Enter image description here


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