Failed to detect a valid SSL – but Qualys SSL Labs can

In the back-end, you can force Really Simple SSL to recognize the certificate by clicking the “reload over https” button, or by changing the URL to https in the browser, then hit enter.

Then you can activate.

Hi Rogier,

Thank you so much for a quick reply.
When I follow “reload over https”, it does visit the wp-admin page under https, but the layout is still broken as my browser console indicates that stylesheets and other “mixed content” are still being loaded via HTTP.

Also, in that wp-admin page over https there is still the warning

“Really Simple SSL failed to detect a valid SSL certificate… Reload over https”

Maybe a printscreen might clarify my words better: https://www.dropbox.com/s/jm4kfs0om4rtkj7/2020-05-23%2021_19_15-SSL%20settings%20%E2%80%B9%20Institute%20For%20Systems%20and%20Robotics%20%E2%80%94%20WordPress.jpg?dl=0

Cheers

• This reply was modified 4 years, 9 months ago by Musiphilos.

While on https, can you go to (your domain here)/wp-admin/options-general.php?page=rlrsssl_really_simple_ssl&tab=configuration

Then check if there’s an “activate SSL” button there?

If that doesn’t work, you can first try changing your home_url and site_url to https in settings/general.

Thank you Rogier,

I confirm that under that link there is no “activate SSL” element in the DOM.
Also, after changing to https the home and site_url under “settings/general” my website is now showing a ERR_TOO_MANY_REDIRECTS (welcome.isr.tecnico.ulisboa.pt redirected you too many times.)

Can you try adding

$_SERVER['https']='on';

To your WP-config.php?

Hi Rogier,

Thank you for the tip. Unfortunately it hasn’t solved the problem(s) yet.
I’ve added that code in wp-config.
The option “activate plugin” in the &tab=configuration of Simple SSL is still not showing up because

Really Simple SSL failed to detect a valid SSL certificate

as seen on the PrintScreen bellow
https://www.dropbox.com/s/e002oxfapldh5ea/2020-05-24%2009_50_04-Window.jpg?dl=0

Also, I’ve activated debug mode and got this

General
Plugin version: 3.3.3
Invalid SSL certificate
SSL is not yet enabled

Options
* Mixed content fixer

Server information
Server: apache
SSL Type: NA

Detecting configuration
Check SSL by retrieving SSL certificate info
siteurl or home url defines found in wpconfig
.htaccess does not contain default Really Simple SSL redirect

Constants
No constants defined

I’ve tried to manually add the following code to .htaccess

<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{HTTPS} !=on [NC]
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R=301,L]
</IfModule>

which did exactly what I expected: forced 301 redirect (so no HTTP available via browsing) but certificate is still not found and mixed content problem persists.

Anything I’m missing?

Thank you for a great product and service

• This reply was modified 4 years, 9 months ago by Musiphilos.

Also, I followed some documentation recommendations and tried to force SSL with define('FORCE_SSL_ADMIN', true); and got

ERR_TOO_MANY_REDIRECTS

error on my website.

Also visited https://staging-welcome.isr.tecnico.ulisboa.pt/wp-content/plugins/really-simple-ssl/ssl-test-page.php
and got

#SSL TEST PAGE#
This page is used purely to test for SSL availability.
#NO KNOWN SSL CONFIGURATION DETECTED#

• This reply was modified 4 years, 9 months ago by Musiphilos.

this domain:
https://staging-welcome.isr.tecnico.ulisboa.pt/

Does not have a valid SSL certificate, so won’t be able to load over https.

To test it in staging, you’ll need a certificate there too.

Dear Rogier,

Thank you fo much fo your so Quik reply.
Indeed there was a misconfiguration on the part of the certificate, that I was able to pinpoint as the culprit. That would be very likely because this is such a well-built plugin.

Certainly considering the Pro now.