Detect what is using port

From the output of netstat, findstr will give the lines which have word in it. On my system, I used the following command to check which process belongs to process id On my system, I executed the following command to find first process id of a process with name javaw.

Use of the netstat command with -aon options together with the findstr command to find out which process is using a particular port, and vice versa. Published at DZone with permission of Gaurav Bhardwaj. See the original article here. Thanks for visiting DZone today,. Edit Profile. When one device sends traffic to another, the IP address is used to route that traffic to the appropriate place.

Once the traffic reaches the right place, the device needs to know which app or service to send the traffic on to. If the IP address is akin to a street address on a piece of mail, the port is something like the name of the person at that residence who gets the mail. All these methods should work no matter which version of Windows you use.

Most of the time, that command will work fine. After you hit Enter, the results may take a minute or two to fully display, so be patient. Here, for example, you can see that port is tied up by a process named picpick. PicPick is an image editor on our system, so we can assume the port is actually tied up by the process that regularly checks for updates to the app.

Type the following text at the Command Prompt, and then hit Enter:. Go ahead and download the tool. Just make sure you get the right version the regular version is for bit Windows and the x64 version is for bit Windows.

Just unzip the download folder and run executable. Browse All iPhone Articles Browse All Mac Articles Do I need one? Browse All Android Articles Browse All Smart Home Articles Customize the Taskbar in Windows Browse All Microsoft Office Articles What Is svchost.

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I guess that it should also work on older Windows versions. However, you could always get it by formatting the output. The property you are looking for is OwningProcess. Where is the PID of your process. This is as mentioned here. The Currports tool helps to search and filter. This answer was originally posted to this question. It's not ideal, but if you use Sysinternals' Process Explorer you can go to specific processes' properties and look at the TCP tab to see if they're using the port you're interested in.

It is a bit of a needle and haystack thing, but maybe it'll help someone I recommend CurrPorts from NirSoft. CurrPorts can filter the displayed results. TCPView doesn't have this feature. Process Explorer. Process Dump. Port Monitor. If you just want to know process running and threads under each process, I recommend learning about wmic.

It is a wonderful command-line tool, which gives you much more than you can know. The above command will show an all process list in brief every 5 seconds. Programmatically, you need stuff from iphlpapi. Using PowerShell You can also check the reserved ports with the command below. Hyper-V reserve some ports, for instance.

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Active 8 months ago. Viewed 4. Improve this question. Ben Voigt k 37 37 gold badges silver badges bronze badges. DavidJesus doesn't show process on windows Show 2 more comments. Active Oldest Votes.

Improve this answer. Tereza Tomcova 4, 2 2 gold badges 28 28 silver badges 27 27 bronze badges. Brad Wilson Brad Wilson You may have to run your command line shell as administrator, otherwise you may get an error message about insufficient privileges.

Use the "Run as administrator" option when right-clicking cmd. Works but requires elevated permission. RodionSychev The powershell command is expecting you to replace "portNumber" with the port number you are looking for.

The error states that "portNumber" isn't a number. Show 15 more comments. Also shows the binding's firewall status last column.