PID:4 using Port 80
Problem
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": 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
Error Output
TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4
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1 Fix
Fix for: PID:4 using Port 80
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: Open task manager, go to processes tab and check “PID” in , 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 drive…
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