I installed Apache 2.2.11 on the Windows XP portion of my desktop workstation for development purposes, but I got a lot of ambiguous errors when starting from the Apache Service Monitor or the Windows start menu.
Finally, when I started Apache from the command line I got a more informative error:
(OS 10048) Only one usage of each socket address (protocal/network address/port) is normally permitted. : make_sock: could not bind to address 127.0.0.1:80 no listening sockets available, shutting down
It turns out, I had Skype running, which by default binds to ports 5520, 80, and 443. There are several solutions:
Continue reading Apache Install and Ambiguous Errors