How do I solve my this probltm in Xampp Control Panel (APache or MysQl) is not working when I click on start it show the red color message in bottom? I've installed Apache XAMPP server on a CentOS7 on a virtual machine. The 127.0.0.1 and the localhost are working within the VM, but not outside of it. How do I configure Apache/XAMPP/CentOS/VM to run a WWW server outside the VM?