The specific error message that I get is when attempting to restart Apache:[indent]Starting httpd: (98)Address already in use: make_sock: could not bind to address 0.0.0.0:443

no listening sockets available, shutting down

[/indent]A few of my servers have been throwing this error when attempting to restart Apache. I noticed it was on servers running Plesk, although I am not sure if that is just a coincidence or not. Anyhow, this problem haunted me badly since upon running the restart command

service httpd restart[/color]
i would get the error and Apache would not start up at all. I looked around for solutions everywhere and found no help so I just ended up rebooting the server. That would get the process back running again, but I hate restarting servers if not absolutely necessary.
 
Anyhow, I found the fix for this a month or so ago and wanted to share it. After getting the error, run
fuser 443/tcp[/color]
This will show which actual processes are hanging on to port 443. For examplr if the output is processes xxxx yyyy and zzzz just run the following command:
kill -9 xxxx yyyy zzzz[/color]
This forcefully kills those pesky processes that are hanging on to port 443 and wouldn\'t listed to Apache when told to let go for the restart. Now you can run:
service httpd start[/color]
and you are all happy again I hope this is helpful for y\'all.