I was trying to install Zend Server CE on my computer but when I got to the point were I need to choose the port for my Web Server it says: "Web Server Port: 80 Occupied". So I decided to check what is using Port 80 with CMD by typing: "netstat -o -n -a | findstr 0.0:80":
TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4
I check for PID:4 in Task Manager's Processes and Services. Seems PID 4 is "System".
So, what I want to know is how can I stop "System" (PID:4) from using Port 80?
INFO:
I am using: Windows 7 64bit; Zend Server CE 5.5.0
Best Answer
Ok, after searching the web for a while I found a solution to my problem.
Just follow these steps to diagnose and resolve your issue:
Get pid that is listening port 80:
netstat -nao | find ":80"
Open task manager, go to processes tab and check “PID” in
Menu/View/Select Columns…
, then look for the process using the PID found in last step.If it is a normal application or IIS, disable it or uninstall. Some programs (such as Skype) have the option to disable its use of port 80.
If it is a System Process—PID 4—you need to disable the HTTP.sys driver which is started on demand by another service, such as Windows Remote Management or Print Spooler on Windows 7 or 2008.
There is two ways to disable it but the first one is safer:
1.
Go to device manager, select “show hidden devices” from menu/view, go to “Non-Plug and Play Driver”/HTTP, double click it to disable it (or set it to manual, some services depended on it).
Reboot and use
netstat -nao | find ":80"
to check if 80 is still used.2.
Launch RegEdit.
Go to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\HTTP
Change the value of "start" to 4, which means disabled.
Reboot your computer.
My solution was step 4.