Port 80 is being used by SYSTEM (PID 4), what is that?

Posted by GiH on Stack Overflow See other posts from Stack Overflow or by GiH
Published on 2009-09-15T23:22:52Z Indexed on 2010/04/21 5:33 UTC
Read the original article Hit count: 272

Filed under:

iis

|

port

|

pid

|

netstat

I am trying to use port 80 for my application server, but when I perform "netstat -aon" I get

TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4

When I look up the process in task manager, it shows PID 4 is SYSTEM, thats it, not extension... nothing, just "SYSTEM". Whats going on here?

I'm afraid to end this process, what do I do?

UPDATE:

I've solved this through a stackoverflow question. Follow this link to find the solution for how to get IIS to stop listening on port 80 for a specified IP address.

© Stack Overflow or respective owner

Related posts about iis

How to find and fix issue with Pound and HAProxy

as seen on Server Fault - Search for 'Server Fault'
Pound sits in front of HAProxy (on the same box) to perform SSL off-load. Requests are passed to 127.0.0.1:80 where HAProxy then balances the requests across backend servers for a hosted ASP .NET web app. A user is getting HTTP error 500 (Internal Server Error) returned to their browser this morning… >>> More
How to migrate deploy RESTful WCF Web Service from IIS 6.0 to IIS 7.0

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, I have a WCF Restful Web Service. It works find under VS and IIS 6.0. Now I want to move it to another work station with IIS 7.0 on it. I tried to copy all the deploy file from IIS 6 to IIS 7, but it cannot be accessed by other client, except for the request from it's own machine. I don't… >>> More
Server with IIS and Apache - how to SSL encrypt Apache with IIS

as seen on Server Fault - Search for 'Server Fault'
I have a Windows Server 2003 box already setup and working with IIS 6. IIS is set to serve a site out over both HTTP and HTTPS connections using default ports. For various reasons I need to set Apache up on the same server and it needs to serve its pages to end-users as SSL encrypted HTTPS pages… >>> More
Having IIS remote management problem with my vista machine managing Server 2008 IIS 7.5

as seen on Server Fault - Search for 'Server Fault'
I am trying to use IIS 7 Remote Management installed on Vista Ultimate SP1. Connection is to IIS 7.5 on Windows Server 2008 Webserver R2. Tried on both full & core install. When I connect up, the console wants to download and install new features. Microsoft.Web.Management.IisClient 7.5.0.0 Microsoft… >>> More
MVC4 App opens with directory listing and gives a 404 for any direct URL's entered in the browser

as seen on Pro Webmasters - Search for 'Pro Webmasters'
I've just deployed a previously (on my local IIS) working MVC4 app to IIS 7.5 on the dev server. After tweaking this and that - one knows how these things get forgotten - the app finally launches, but shows a directory listing of the app root. Clicking on most links there works, opening the directory… >>> More

Related posts about port

Port forward to different port number

as seen on Super User - Search for 'Super User'
I have a router that sets up rules like so: TCP Any -> 5800 Any -> 5900 UDP Any -> 5800 Any -> 5900 Computer: ip-address This would allow someone 'outside' to connect to my router's port 5800 and 5900 and forward that to the same port on my computer. My issue is that I want the 'outside'… >>> More
"port forwarding": redirect calls to webservice at port 8081 to port 80

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, a colleague of mine wrote a webservice that runs on port 8081 of our Windows 2008 Server. He uses the class ServiceHost, afaik this means its a standalone host (no IIS or ASP involvement). Note: I'm new into WCF ;) Now there are some issues with clients behind a firewall blocking the requests… >>> More
Problem with hadoop start-dfs.sh

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I installed and configured hadoop on my Ubuntu 14.04 server, virtualized inside of hyper-v, however I am getting an issue when i run start-dfs.sh root@sUbuntu01:/var/log# start-dfs.sh 14/06/04 15:27:08 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java… >>> More
USB Hub and Ubuntu

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a powered 7 port hub connected to my Ubuntu box and it does nothing. The devices (zip drive and web cam) work direct, but aren't recognized through the hub. This worked fine in Windows 7. I can't prove it is the OS because this is a new motherboard and processor. Any advice? EDIT : Output… >>> More
Cannot change port 25 to port 587

as seen on Super User - Search for 'Super User'
I am using outlook 2003. My email provider is Cox. Trying to change my out going port to 587 so I send mail while traveling. Others I know on Cox have done this with succes, but they are using newer version of outlook. When I go to change my existing email accounts, outlook will not allow me to… >>> More