Port 443 in use by Unable to open process with PID 4

Question

I have a very strange problem with my Apache 2 4 working with Xampp 1 8 2 on Windows Server 2008 R2   When I tried to start Apache server in XAMPP  an error message is shown    Apache     Problem detected   Apache     Port 443 in use by  Unable to open process  with PID 4   Apache     Apache WILL NOT start without the configured ports free   Apache     You need to uninstall disable reconfigure the blocking application  Apache     or reconfigure Apache and the Control Panel to listen on a different port   However  the process with PID 4 is system  I ve tried to restart my computer and it doesn t work   I have installed Apache 2 4 via a tar gz file sereral days ago  and uninstalled it  So  I don t think this behavior will cause the problem   And here s the result using commond netstat -a -n -o   findstr 443  C  Users Administrator gt netstat -a -n -o   findstr 443   TCP    0 0 0 0 443            0 0 0 0 0              LISTENING       4   TCP         443                    0                 LISTENING       4   Can you tell me what to do

User · Answer

I had the same problem and solved by doing following.

Go to Task Manager, click on services tab, order by pid's than if you find the related process, kill it otherwise, right click and click on show details, the process should be shown now. order by pid's than kill the related process.

User · Answer

Modify this  LocalDisk    gt  gt    xampp    gt  gt    apache    gt  gt    conf    gt  gt    httpd conf Line 58  Listen   80     for this  Line 58  Listen   8080     Modify this   Line 220  ServerName localhost    80     for this  Line 220  ServerName localhost    8080     Modify this   LocalDisk    gt  gt    xampp    gt  gt    apache    gt  gt    conf  gt  gt  extra    gt  gt    httpd-ssl conf Line 36  Listen   443     for this  Line 36  Listen   444     Modify this   Line 121   lt VirtualHost  default    443   gt  Line 125  ServerName www example com   443     For this  Line 121   lt VirtualHost  default    444   gt  Line 125  ServerName www example com   444

User · Answer

I ran task manager and looked for httpd exe in process  Their were two of them running  I stopped one of them gone back to xampp control pannel and started apache  It worked

User · Answer

Below steps by sztupy worked for me  I went to Control Panel Network and Internet Network and Sharing Center and clicked on Change adapter settings  I clicked on Incoming Connections and right clicked on properties  The VPN click box at the bottom of the General tab was on  so I unchecked it  Under Users  I also unchecked a previous user I had allowed to copy some data weeks before  Then I clicked okay  Closed the control panel and restarted the XAMPP control panel

User · Answer

Similarly  I experienced this  Port 443 in use by  Unable to open process  with PID 6012  When starting XAMPP Control Panel v3 2 1 for the first time   In Task Manager I found that PID 6012 was Apache web server  A copy of it was running in the background without the GUI   and when I invoked the GUI it was trying to start another copy  Killed the phantom copy and then XAMPP started up fine   I didn t have to change any port settings

User · Answer

I had this same problem with port 443  process id 4 and everything  For me it was not the VPN using the port  it was IIS  To fix this I opened up IIS and right clicked on my instance and stopped it  Then IIS Express Or apache if you re using that  was able to use port 443  Hope this helps someone else

User · Answer

I had the same problem when I installed xampp on Windows 7  I installed Windows server and Web Deployment Agent Service  MsDepSvc exe  which uses port 80   So I had an error  PID 4 listening to port 80 when I ran apache   Solution  Open task manager   Ctrl Shift Esc  then find  MsDepSvc exe  and disable it  Finally restart xampp  ref  http   www honk com au index php 2010 10 20 windows-7-pid-4-listening-port-80-apache-cannot-star

User · Answer

Some process is using this port  so you can change the port that is used by xampp  to be able to use it  For this job you have to do this   1- Open httpd-ssl conf in xampp apache conf extra  2- Look for the line containing Listen 443  3- Change port number to anything you want  I use 4430  ex  Listen 4430   4- Replace every 443 strings in that file with 4430   5- Save the file

User · Answer

A simple way to fix this is to change the XAMP port to a random number

User · Answer

The solution by  Mark Seagoe  worked for me too  I got a message that  Port 443 in use by Unable to open process with PID 14508    So i opened task manager and killed this process 14508  This was used by my previous xampp version and it was orphaned    so no need to change any ports or anything  this is a simple two step process and it worked

User · Answer

I got this same error and managed to fix it by closing Skype and running XAMP as Administrator  works perfectly now  So right click THE XAMP icon and click run as admin

User · Answer

Simply run as Administrtor  xampp-control exe

User · Answer

I had the same problem  Another way to solve this problem when running XAMPP on Windows    Open a CMD prompt and type in command   net stop was  y Run Dialog Box  press keys Win R     then type  services msc   I then scrolled down to  World Wide Web Publishing Service Double clicked on it and clicked STOP  if this service status is Started   3 Start Apache again with XAMPP     Link Ref  http   www sitepoint com unblock-port-80-on-windows-run-apache

User · Answer

The port is being used by another process    PID 4 means it is Windows System  you can open a cmd window with  super user administrator  priviledges and write  net stop http   it will stop all the web services  Then check if it freed the port   I had the same problem and it happened to be the  Routing and Remote Access Service   You open Services in the windows search  and then look for the specific service name  Change the startup of it to manual or automatic  whatever you decide     Use some app like TCPView to help what port each App PID is using   The origin of the problem seems to be Microsoft not knowing what the word disable Microsoft VPN means

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STEPS   Un-install apache xampp  software from your windows  Delete the xampp folder from c folder  Delete the folder from recycle-bin to permanently delete the  xampp folder Restart  your computer  Finally install a clean copy of apache xampp  software    By Engineer Rafiq Ahmad Qureshi   qureshi rafiq111 gmail com

User · Answer

I had a similar issue where port 443 was blocked by PID 4  After breaking my head for several hours I found the command netsh show urlacl  which gave me an idea of the system process blocking the port    To run command run cmd or windows shell in administrator mode      netsh      http      show urlacl   I got response a which showed 443 was blocked by NT Service SSTPSvc Reserved URL   Response   https     443 sra  BA195980-CD49-458b-9E23-C84EE0ADCD75        User  NT SERVICE SstpSvc          Listen  Yes          Delegate  Yes      User  BUILTIN Administrators          Listen  No          Delegate  No      User  NT AUTHORITY SYSTEM          Listen  Yes          Delegate  Yes  With this information I followed the microsoft link to change the listening port for SSTP based vpn  https   support microsoft com en-in kb 947032  This resolved my port issue

User · Answer

Here it was the  Work Folders  feature having been added on a Server 2012 R2  By default it is listening for HTTPS client requests on port 443 via the  System  process  There is a Technet blog post explaining how to change that port number  Don t forget to add a corresponding firewall rule for your custom port and disable the existing one for port 443 though

User · Answer

Probably some process is using that port  i would guess you have another webserver running with ssl tls already  You must trac down what process is using the port and shut it down  The fact that it does not help to restart your computer makes me think that you may find what you are looking for in msconfig  Try to have a look there  open prompt and write msconfig  post 443 is normaly used by secure http     https  I have never used windows server but there could be some built in webserver that autostarts  have you ever installed another webserver   Try use the command Netstat -a -n -o to see what process that is blocking  you can the process pid from the output   The  Routing and RAS - service is your problem i guess look at this post  it does this  thats why its blocking   SSTP tunneling protocol Secure Socket Tunneling Protocol  SSTP  is a new form of virtual private networking  VPN  tunnel with features that allow traffic to pass through firewalls that block PPTP and L2TP IPsec traffic  SSTP provides a mechanism to encapsulate PPP traffic over the SSL channel of the HTTPS protocol  The use of PPP allows support for strong authentication methods  such as EAP-TLS  The use of HTTPS means traffic will flow through TCP port 443  a port commonly used for Web access  Secure Sockets Layer  SSL  provides transport-level security with enhanced key negotiation  encryption  and integrity checking   from tecsupport ms

User · Answer

Just change the sll port in httpd-ssl conf file  It would be under C  xampp apache conf extra  Find  443  and replace it with other values e g 8181   then start your apache again

User · Answer

I simply went to the XAMMP config button in the XAMPP control panel GUI and clicked on Server and Port settings and I changed the SSL port value

User · Answer

I had the same problem  port-443-in-use-by-unable-to-open-process-with-pid-4  First I disabled the weather tile in Win  that apparently phones home to Redmond for updates after this showed on netstat list   This didn t solve the problem  I looked at the post already here which mentioned VPNs  so I went to Control Panel Network and Internet Network and Sharing Center and clicked on Change adapter settings  I clicked on Incoming Connections and right clicked on properties  The VPN click box at the bottom of the General tab was on  so I unchecked it  Under Users  I also unchecked a previous user I had allowed to copy some data weeks before  Then I clicked okay  Closed the control panel and restarted the XAMPP control panel  It fired right up without a problem

[apache] Port 443 in use by "Unable to open process" with PID 4

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