Windows – How to determine why port 443 is already in use

apache-http-servernetstatportsocketswindows 7

I'm running Apache 2.4.10 on a Windows 7 machine and am trying to add SSL connections. Port 80 connections work fine, and I'm trying to add port 443. When the httpd.conf gets Listen 443 added it fails to start up:

c:\Apache24\bin> httpd.exe -k start
(OS 10048)Only one usage of each socket address (protocol/network address/port) is normally permitted.  : AH00072: make_sock: could not bind to address [::]:443
(OS 10048)Only one usage of each socket address (protocol/network address/port) is normally permitted.  : AH00072: make_sock: could not bind to address 0.0.0.0:443
AH00451: no listening sockets available, shutting down
AH00015: Unable to open logs

A check using netstat at first revealed Chrome using port 443, so I quit Chrome and after the time out elapsed, the ports are now empty using netstat, but the server still fails to start when Listen 443 is present:

c:\Apache24\bin> netstat -ano | grep 443

How can I determine who is already on port 443 and blocking the Apache Server from using that port?

Best Answer

The issue appears to have been Apache conflicting with itself due to there being two Listen 443 directives, the one I added and one via include:

<IfModule ssl_module>
#Include conf/extra/httpd-ssl.conf
Include conf/extra/httpd-sni.conf
SSLRandomSeed startup builtin
SSLRandomSeed connect builtin
</IfModule>

In the conf/extra/httpd-ssl.conf appears the conflicting line:

Listen 443 https

Dropping the Listen 443 I added resolved the issue.

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Http://localhost:8080 is not working on running apacher Server through XAMPP

In general, messing with the ports that your operating system is using just seems like a bad idea. You’ll end up with weird network issues like when trying to print.

In addition, for me having two web servers (IIS running locally for .NET projects) listening on different ports was important.

The best situation was to simply change the IP Port that Apache listens on (the default is port 80, which is the standard for all web traffic).

I changed mine to port 8666 (but it could be anything above 1024). I did the following:

Locate the httpd.conf file in the following directory

[install directory]\xampp\apache\conf

(mine was in, C:\xampp\apache\conf)
Find the line that says, "Listen 80"
Change it to "Listen 8666"
Save and Close the file
Start or restart the Apache service in the XAMPP control panel.

Life should be good.

The only catch to this method is that you can’t just go to http://localhost/xampp any more. You have to tell your browser which port specifically to use (it will by default use 80), so you will have to use http://localhost:8666/xampp/ (the port is designated by the colon and then the number).

The cool thing is I can run http://localhost:8666 to run Apache and http://localhost:8616 to run my local IIS for .NET projects.

Note: XAMPP install path must NOT have special characters in it. Spaces are allowed, parentheses are NOT allowed. Other special characters have to be tested. Apache will not start if the XAMPP install path contains special characters such as parentheses.

Windows – Determining what process has bound a port (without listening) on Windows

you should use

DWORD GetExtendedTcpTable (PVOID pTcpTable,PDWORD pdwSize, BOOL bOrder, ULONG ulAf, TCP_TABLE_CLASS TableClass,ULONG Reserved );

with

TableClass value = TCP_TABLE_OWNER_PID_ALL "or" TCP_TABLE_OWNER_PID_CONNECTIONS "or" TCP_TABLE_OWNER_PID_LISTENER

pTcpTable structure -> MIB_TCPTABLE_OWNER_PID

depending on the info you'd like to retrieve

EDIT:

TCP_TABLE_OWNER_PID_ALL returns MIB_TCPTABLE_OWNER_PID structure that is an array of MIB_TCPROW_OWNER_PID structures where each dwState should have MIB_TCP_STATE_CLOSED when bound and not listening, this structure also offers dwLocalAddr and dwLocalPort

typedef struct _MIB_TCPROW_OWNER_PID {
  DWORD dwState;
  DWORD dwLocalAddr;
  DWORD dwLocalPort;
  DWORD dwRemoteAddr;
  DWORD dwRemotePort;
  DWORD dwOwningPid;
} MIB_TCPROW_OWNER_PID, *PMIB_TCPROW_OWNER_PID;

Best Answer

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Http://localhost:8080 is not working on running apacher Server through XAMPP

Windows – Determining what process has bound a port (without listening) on Windows

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