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This error is logged once I create a website:

The World Wide Web Publishing Service (WWW Service) did not register the URL prefix http://*:80/ for site 6. The necessary network binding may already be in use. The site has been disabled. The data field contains the error number.

I followed this link but there is no ListenOnlyList, instead I saw UrlAclInfo which contains this:

enter image description here

C:\Users\Administrator>netstat -ano | find ":80" |find /i "listen"
  TCP                 LISTENING       4
  TCP    [::]:80                [::]:0                 LISTENING       4

4 is the pid number of System process.

Any ideas to fix this?

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3 Answers 3

up vote 2 down vote accepted

As stated here Un-Install Microsoft Web deploy and then Re-Install it using command line with these parameters:

msiexec /I <msi_filename> /passive ADDLOCAL=ALL LISTENURL=http://+:8080/MsDeployAgentService2/
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Check that no existing website is using a binding without a host header on ("All Unassigned").

If that's not the case, figure out what process has binded *:80 on your machine by issuing:

netstat -ano | find ":80" |find /i "listen"

That will show you the processes listening on :80, the last number in each string is the Process ID that created the given binding

To find a process by its PID, do the following:

  • Open Task Manager (Run -> taskmgr)
  • Go to the "Processes" tab
  • Click the "Show processes from all users" button in the bottom. This will enable you to see all processes(*)
  • Select View -> Select Columns in the menu
  • Be sure to have the "PID (Process ID)" checkbox checked
  • Press "OK"

This is the process obstructing your web site from registering its binding correctly

(*) PROTIP: Pressing the "Show processes from all users" button forces the console to attempt to elevate its privileges, effectively yielding the same call as "Run as administrator" in right-click context menus.
If Task Manager ever returns "Access is denied", "Access denied", error code 5 or returns nothing when sending messages to other users on a computer, simply press the button and you'll have all your permissions and privileges

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Thank you but No, there is just a default website on *:80 and if I create another website it will log this error. –  Mario Dec 7 '12 at 22:55
Thanks again, I edited my question and added the result. It's System process that's holding I don't think I can stop this process. –  Mario Dec 8 '12 at 6:54
I found out that Web Deployment Agent Service and World Wide Web Publishing Service are both using this port. so does this help? –  Mario Dec 8 '12 at 7:32

For me, it was Skype who uses port 80.

So uncheck Skype / Options / Advanced / Connection / Use port 80 and 443 as alternatives for incomming connections.

Now exit Skype, run it again. Everything should work from now.

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Also true of the Skype 'Metro/Modern' app, except there's no obvious option to configure which port it uses –  David Gardiner Aug 29 '14 at 5:41

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