Category Archives: Apache

Refused to display ‘’ in a frame because it set ‘X-Frame-Options’ to ‘deny’.


Refused to display ‘’ in a frame because it set ‘X-Frame-Options’ to ‘deny’.

Setting this up, on your .htaccess might solve the problem

Header set X-Frame-Options SAMEORIGIN

But, I have multiple frames…

Refused to display ‘’ in a frame because it set multiple ‘X-Frame-Options’ headers with conflicting values (‘DENY, SAMEORIGIN’). Falling back to ‘deny’.

This worked out!

Header always unset X-Frame-Options

As seen on

Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA.

So, I was trying to create a SSL certificate with certbot…..

[email protected]:~# certbot --apache -d

This was how I’v done to properly create it.

certbot --authenticator standalone --installer apache -d --pre-hook "systemctl stop apache2" --post-hook "systemctl start apache2"

google pagespeed – centos installation


Let’s edit/create google-mod-pagespeed.repo

vi /etc/yum.repos.d/google-mod-pagespeed.repo

and add

Let’s install it with yum!
yum install mod-pagespeed
Then we need to restart apache!
service httpd restart


This is how we test it…

curl -D- http://localhost/ | head -10


[[email protected] webroot]# curl -D- http://localhost/ | head -10
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 4328 100 4328 0 0 27929 0 –:–:– –:–:– –:–:– 28103
HTTP/1.1 200 OK
Date: Wed, 12 Sep 2018 15:52:41 GMT
Server: Apache/2.4.6 (CentOS) PHP/5.6.38
X-Powered-By: PHP/5.6.38
Vary: Accept-Encoding
Cache-Control: max-age=0, no-cache, s-maxage=10
Content-Length: 4328
Content-Type: text/html; charset=iso-8859-1