I had the following error message
Port 80 in use by "Unable to open process" with PID 4!
Apache WILL NOT start without the configured ports free!
You need to uninstall/disable/reconfigure the blocking application
or reconfigure Apache and the Control Panel to listen on a different port
Starting Check-Timer
Control Panel Ready
opened the httpd.conf and changed the listen port from 80 to 1234 in both places
Listen 12.34.56.78:1234
Listen 1234
Then go to Config for the xampp control panel and go to service and port setting and changed the port from 80 to 1234
That worked.
