Check out the \xampp\apache\logs\error.log file.
You seem to have something running as a service hogging port 443.
See if this post helps:
viewtopic.php?f=16&t=40062&p=158918#p158918If you can't find what is using port 443 then you can disable Apache's use of port 443 by editing the httpd.conf file and adding a # to this line so it looks like this
- Code: Select all
# Secure (SSL/TLS) connections
# Include "conf/extra/httpd-ssl.conf"
or alternatively you can use another port for SSL by editing the above mentioned \xampp\apache\conf\extra\httpd-ssl.conf file and change all the references to port 443 to port 4433 for example.
If you make any changes to any conf file or ini file in XAMPP always make a backup copy of the original first, then save the file and try and start Apache again.