To fix "XAMPP, Apache - Error: Apache shutdown unexpectedly" error, by pass port 80.

Step 1 - From the XAMPP Control Panel, under Apache, click the Config button, and select the Apache (httpd.conf).

== Inside the httpd.conf file, find a line:

Listen 80

== Change the 80 into any number / port you want. Let's use port 8080.

Listen 8080

== Still from the httpd.conf file, find another line:

ServerName localhost:80

== Change 80 to 8080.

ServerName localhost:8080


Step 2 - From the XAMPP Control Panel, under Apache, click the Config button again, but this time select the Apache (httpd-ssl.conf). Inside the httpd-ssl.conf file, find line:

Listen 443

== Change the 443 into any number / port you want. Let's use 4433.

Listen 4433

== Still from the httpd-ssl.conf file, find another two lines:

<VirtualHost _default_:443>
...
ServerName www.example.com:443


== Change 443 to 4433.

<VirtualHost _default_:4433>
...
ServerName www.example.com:4433

Step 3 - Shut down XAMPP control panel, start it again, test