Upgrading Apache (Windows)
1. Stop Apache and Tomcat services and copy the binaries for Apache 2.2.20 under /opt.
2. Copy httpd.conf and workers.properties to conf directory from the older version to the new version.
3. Copy httpd-ssl.conf to conf\extra directory from the older version to the new version.
4. Rename the old Apache folder under opt to apache_old.
5. Rename the new Apache binaries folder to apache.
6. Restart Apache and Tomcat services.