If you install Apache on Windows and you’ve got the message: No installed service named “Apache2”, disable all your firewalls like Norton and Windows Firewall, SKYPE (this application and/or other apps  are using the same port 80 as your localhost).

• Go to window command and type netstat -na to look for all ports used on your PC.
• When Skype is running, it blocks your Apache installation process and it won’t register Apache to Window Services.
• Restart your PC. Uninstall Apache, then reinstall Apache while all the above are disabled. Now your Apache should automatically starts after the installation.