Apache Friends Support Forum

4:50:46 PM [Apache] Problem detected!
4:50:46 PM [Apache] Port 443 in use by "Unable to open process" with PID 2880!
4:50:46 PM [Apache] Apache WILL NOT start without the configured ports free!
4:50:46 PM [Apache] You need to uninstall/disable/reconfigure the blocking application
4:50:46 PM [Apache] or reconfigure Apache and the Control Panel to listen on a different port
4:50:46 PM [main] The Mercury module is disabled
4:50:46 PM [main] The Tomcat module is disabled
4:50:46 PM [main] Starting Check-Timer
4:50:46 PM [main] Control Panel Ready

Is there a way to change ports?

Yes, but it is better to change the application using that port instead of changing Apache default ports unless you absolutely need that port for the other application.

Rerun the control panel with admin rights and it will tell you what the other app is.