Error Apache

[Besoin d'aide]

Hello,
I am trying to solve this error, can you help me and explain me how to do it?
Information: V3.2.2 in x32bit on Windows 7. If you find a later version in x32bit, I'm interested.

Error :
19:28:29 [Apache] Problem detected!
19:28:29 [Apache] Port 80 in use by "Unable to open process" with PID 4!
19:28:29 [Apache] Apache WILL NOT start without the configured ports free!
19:28:29 [Apache] You need to uninstall/disable/reconfigure the blocking application
19:28:29 [Apache] or reconfigure Apache and the Control Panel to listen on a different port

[Altrea]

Hi,

• [Q&A] Apache won't start
• [Q&A] solving Port 80 in use by PID 4 (HTTP.sys) issue