We help IT Professionals succeed at work.
Get Started

System Process is listening on port 80 (Vista)

Last Modified: 2013-12-04
I have just noticed that port 80 is in use by the System Process.  I have not noticed this before and I am wondering if something has gone "astray".

How do I determine what is causing the System process to bind to port 80.  I do not have IIS running (According to Control Panel->Windows Features).

An output from the HTTP server is below.
Trying, 80 ... Open
GET / HTTP/1.0
HTTP/1.1 404 Not Found
Content-Type: text/html; charset=us-ascii
Server: Microsoft-HTTPAPI/2.0
Date: Sun, 25 Jan 2009 21:21:54 GMT
Connection: close
Content-Length: 315
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd">
<META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii"></HEAD>
<BODY><h2>Not Found</h2>
<hr><p>HTTP Error 404. The requested resource is not found.</p>
[Connection to closed by foreign host]

Open in new window

Watch Question
This problem has been solved!
Unlock 1 Answer and 17 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE