title: XAMPP Port 80 in use by "Unable to open process" with PID 4
body: <p>XAMPP won't work it says </p>
  
  <pre><code>Port 80 in use by "Unable to open process" with PID 4!
  6:32:24 PM  [Apache]    Apache WILL NOT start without the configured ports free!
  6:32:24 PM  [Apache]    You need to uninstall/disable/reconfigure the blocking application
  6:32:24 PM  [Apache]    or reconfigure Apache and the Control Panel to listen on a different port
  </code></pre>
  
  <p>I have tried everything from deleting the World Wide Web Publishing Service (which did not work because i dont even have it installed.) To using the command prompt which says</p>
  
  <pre><code>Active Connections
  
    Proto  Local Address          Foreign Address        State           PID
    TCP    0.0.0.0:80             Dave:0                 LISTENING       4
    TCP    0.0.0.0:135            Dave:0                 LISTENING       776
    TCP    0.0.0.0:445            Dave:0                 LISTENING       4
    TCP    0.0.0.0:2382           Dave:0                 LISTENING       2576
    TCP    0.0.0.0:5357           Dave:0                 LISTENING       4
    TCP    0.0.0.0:49152          Dave:0                 LISTENING       548
    TCP    0.0.0.0:49153          Dave:0                 LISTENING       928
    TCP    0.0.0.0:49154          Dave:0                 LISTENING       972
    TCP    0.0.0.0:49155          Dave:0                 LISTENING       1264
    TCP    0.0.0.0:49156          Dave:0                 LISTENING       660
    TCP    0.0.0.0:49157          Dave:0                 LISTENING       1832
    TCP    0.0.0.0:49159          Dave:0                 LISTENING       652
    TCP    0.0.0.0:51782          Dave:0                 LISTENING       1884
    TCP    127.0.0.1:51783        Dave:0                 LISTENING       1884
    TCP    192.168.0.16:139       Dave:0                 LISTENING       4
    TCP    192.168.0.16:50260     stackoverflow:https    ESTABLISHED     5768
    TCP    192.168.0.16:50263     ec2-54-237-50-81:https  ESTABLISHED     5768
    TCP    192.168.0.16:50287     bn1wns1011221:https    ESTABLISHED     1640
    TCP    192.168.0.16:50456     bn1wns2011310:https    ESTABLISHED     1640
    TCP    192.168.0.16:50489     stackoverflow:http     ESTABLISHED     5768
  </code></pre>
  
  <p>I dont understand why its not working because it was working fine a couple days ago could someone help please, thanks.When i do netstat -a -b it says this.</p>
  
  <pre><code>Microsoft Windows [Version 6.3.9600]
  (c) 2013 Microsoft Corporation. All rights reserved.
  
  C:\WINDOWS\system32&gt;netstat -a -b
  
  Active Connections
  
    Proto  Local Address          Foreign Address        State
    TCP    0.0.0.0:80             Dave:0                 LISTENING
   Can not obtain ownership information
    TCP    0.0.0.0:82             Dave:0                 LISTENING
   [httpd.exe]
    TCP    0.0.0.0:135            Dave:0                 LISTENING
    RpcSs
   [svchost.exe]
    TCP    0.0.0.0:443            Dave:0                 LISTENING
   [httpd.exe]
    TCP    0.0.0.0:445            Dave:0                 LISTENING
   Can not obtain ownership information
    TCP    0.0.0.0:2382           Dave:0                 LISTENING
   [sqlbrowser.exe]
    TCP    0.0.0.0:3306           Dave:0                 LISTENING
   [mysqld.exe]
    TCP    0.0.0.0:3306           Dave:0                 LISTENING
   [mysqld.exe]
    TCP    0.0.0.0:5357           Dave:0                 LISTENING
   Can not obtain ownership information
    TCP    0.0.0.0:49152          Dave:0                 LISTENING
   [wininit.exe]
    TCP    0.0.0.0:49153          Dave:0                 LISTENING
    EventLog
   [svchost.exe]
    TCP    0.0.0.0:49154          Dave:0                 LISTENING
    Schedule
   [svchost.exe]
    TCP    0.0.0.0:49155          Dave:0                 LISTENING
   [spoolsv.exe]
    TCP    0.0.0.0:49156          Dave:0                 LISTENING
   [lsass.exe]
    TCP    0.0.0.0:49157          Dave:0                 LISTENING
   [msmdsrv.exe]
    TCP    0.0.0.0:49159          Dave:0                 LISTENING
   Can not obtain ownership information
    TCP    0.0.0.0:51782          Dave:0                 LISTENING
   [sqlservr.exe]
    TCP    127.0.0.1:51783        Dave:0                 LISTENING
   [sqlservr.exe]
    TCP    192.168.0.16:139       Dave:0                 LISTENING
   Can not obtain ownership information
    TCP    192.168.0.16:49180     bn1wns2011302:https    ESTABLISHED
   [Explorer.EXE]
    TCP    192.168.0.16:49267     ec2-54-80-62-105:https  ESTABLISHED
   [opera.exe]
    TCP    192.168.0.16:49318     bn1wns2011304:https    ESTABLISHED
   [Explorer.EXE]
    TCP    192.168.0.16:49397     ord08s08-in-f14:http   ESTABLISHED
   [opera.exe]
    TCP    192.168.0.16:49417     ord08s08-in-f14:http   ESTABLISHED
   [opera.exe]
    TCP    192.168.0.16:49418     ord08s09-in-f5:http    ESTABLISHED
   [opera.exe]
    TCP    192.168.0.16:49427     static-acs-24-101-16-41:http  TIME_WAIT
    TCP    192.168.0.16:49428     static-acs-24-101-16-24:http  TIME_WAIT
    TCP    192.168.0.16:49429     static-acs-24-101-16-41:http  TIME_WAIT
    TCP    192.168.0.16:49430     static-acs-24-101-16-41:http  TIME_WAIT
    TCP    192.168.0.16:49431     static-acs-24-101-16-41:http  TIME_WAIT
    TCP    192.168.0.16:49432     ord08s08-in-f2:http    ESTABLISHED
   [opera.exe]
    TCP    192.168.0.16:49434     ord08s08-in-f5:http    ESTABLISHED
   [opera.exe]
    TCP    192.168.0.16:49435     ord08s08-in-f5:http    ESTABLISHED
   [opera.exe]
    TCP    192.168.0.16:49436     ord08s08-in-f5:http    ESTABLISHED
   [opera.exe]
    TCP    192.168.0.16:49437     ord08s08-in-f5:http    ESTABLISHED
   [opera.exe]
    TCP    192.168.0.16:49438     ord08s08-in-f5:http    ESTABLISHED
   [opera.exe]
  </code></pre>