My netstat -anop tcp results: http://pastebin.com/ahGKFcaD Ric, like logishkas I do not get a popup on step E. After waiting a while for the popup, I decided to click Start Apache on UniController #2. Unlike before where UniController #1 seemed to lockup for 30 seconds, UniController #2 never locks up. Furthermore the splash/Start-up pages instantly loaded in my browser and there was no "Failed to start..." error. However, UniController #2 still shows Apache as red and does not give me buttons to kill it. I was suspicious that the first instance of Apache (C:\z_test_1\UniServerZ\core\apache2\bin\httpd_z.exe) was still running, and the second instance never overrode it. To test this, I added a file to C:\z_test_1\www\, and then navigated to and successfully found it in my browser. While it might be expected behavior for the second instance to not take over port 80, if it is not expected I hope this information helps you debug. If you think this is a Windows 8 issue but you do not possess that version, for what it is worth you can download virtual machine images of Windows 8 direct from Microsoft: http://www.modern.ie/en-us/virtualization-tools#downloads. Once downloaded, it took me less than 10 minutes to extract and boot to the Windows 8 Desktop. Hetasser, I think you are facing a different issue. You are able to start MySQL, we are not. For me httpd_z.exe loads up fine as a process and is a working webserver, it simply is not detected by UniController. Have you tried disabling your antivirus?