I want turn on support on apache2 for http/2. I have apache 2.4.29 and Ubuntu 16.04 LTS and ISPConfig 3.1.11. I saw in log that mpm_prefork does not support http/2 and there is need to change on mpm_event. I saw https://http2.pro/doc/Apache (btw probably dumb question - how set link in post without visible url?) where author says how to do it but in testing environment (I haven't there any external IP or domain visible on the Internet - it's just VMWare virtual machine on private PC) I did not all commands from tutorial: Code: a2enconf php7.0-fpm systemctl reload apache2 a2dismod php7.0 systemctl restart apache2 a2dismod mpm_prefork a2enmod mpm_event systemctl restart apache2 because I have php 7.0.28 which is currently the newest on Ubuntu 16.04 and I dont need install any php7.1. Does anybody know and could say that commands mentioned above won't break ISP?