Linux : Apache Invalid command ‘ProxyPreserveHost’

By | May 17, 2017

Having the following error output trying to start, restart or do a configtest on Apache server?

Invalid command ‘ProxyPreserveHost’, perhaps misspelled or defined by a module not included in the server configuration

This is likely caused because mod_proxy module is not present or disabled. To enable it, look out for the following in the main server configuration :

Then you may attempt run a configtest and restart the Web server daemon.