apache2 Invalid command 'SSLEngine'

When I restart httpd, I get the following error. What am I missing?

[root@localhost ~]# service httpd restart
Stopping httpd:                                            [  OK  ]
Starting httpd: Syntax error on line 22 of /etc/httpd/conf.d/sites.conf:
Invalid command 'SSLEngine', perhaps misspelled or defined by a module not included in the server configuration

I have installed mod_ssl using yum install mod_ssl openssh

Package 1:mod_ssl-2.2.15-15.el6.centos.x86_64 already installed and latest version
Package openssh-5.3p1-70.el6_2.2.x86_64 already installed and latest version

My sites.conf looks like this

<VirtualHost *:80>
#    ServerName shop.itmanx.com
    ServerAdmin webmaster@itmanx.com

    DocumentRoot /var/www/html/magento
    <Directory /var/www/html>
        Options -Indexes
        AllowOverride All

    ErrorLog logs/shop-error.log
    CustomLog logs/shop-access.log

<VirtualHost *:443>
    ServerName secure.itmanx.com
    ServerAdmin webmaster@itmanx.com

    SSLEngine on
    SSLCertificateFile /etc/httpd/ssl/secure.itmanx.com/server.crt
    SSLCertificateKeyFile /etc/httpd/ssl/secure.itmanx.com/server.key
    SSLCertificateChainFile /etc/httpd/ssl/secure.itmanx.com/chain.crt

    DocumentRoot /var/www/html/magento
    <Directory /var/www/html>
        Options -Indexes
        AllowOverride All

    ErrorLog logs/shop-ssl-error.log
    CustomLog logs/shop-ssl-access.log    
Asked By: Christian


Probably you do not load the ssl module. You should have a LoadModule directive somewhere in your apache configuration files.

Something like:

LoadModule ssl_module /usr/lib64/apache2-prefork/mod_ssl.so

Usually apache configuration template has (on any distribution) a file called (something like) loadmodule.conf in which you should find a LoadModule directive for each module you load into apache at server start.

Answered By: andcoz

On many systems (Ubuntu, Suse, Debian, …) run the following command to enable Apache’s SSL mod:

sudo a2enmod ssl

a2enmod man page

Answered By: Stéphane

httpd24 solution:

yum install mod24_ssl
Answered By: dtbarne

On CentOS 7 installing the package “mod_ssl” and restarting the apache server worked for me:

yum install mod_ssl
systemctl restart httpd
Answered By: Falco Preiseni

On Ubntu 18.04 bionic.

sudo a2enmod ssl
sudo service apache2 restart
Answered By: pumpkin_cat

I received the same error while installing the SSL Certificate on my website. I have fixed it by executing the following command in the terminal.

# yum install mod_ssl
# httpd -t
# systemctl restart httpd

I am sure that the above commands will fix your error.

Answered By: Niranjaysingh Rajput
Categories: Answers Tags: ,
Answers are sorted by their score. The answer accepted by the question owner as the best is marked with
at the top-right corner.