This guide suggests solutions to resolve common issues and frequent errors that may occur when you try to display your website in https after activating an SSL certificate.

The web browser automatically displays the http version of the site when you try to access it in https

It is recommended to perform the following actions:

• Empty the cache of your applications or your site.
• Check that the pages and scripts of the site do not contain redirects to the http version of the site.
• Check that the site's .htaccess file does not contain redirects to the http version of the site.
• Set the site's https address as the default one:
  • with WordPress Infomaniak
  • for other cases

The website is displayed incorrectly (missing images, unsupported stylesheets, etc.) or displays a warning in the address bar

It is recommended to perform the following actions:

• Empty the cache of your applications or your site.
• Check that the pages and scripts do not point to external resources in http; the site whynopadlock.com can help you identify the unsecured elements of your site.
• Also refer to this other guide on this subject.

"This web page has a redirect loop", "ERR_TOO_MANY_REDIRECTS"

If your web browser displays this error, it is recommended to perform the following actions:

• If the site works with a web application like WordPress or Joomla, deactivate the extensions one by one to identify the problematic one.
• Check that the pages and scripts of the site do not contain redirects to the http version of the site.
• Try to deactivate HSTS.
• If Prestashop is used, SSL must be activated on all pages:
  1. Add your SSL domain:
     • Go to Preferences > SEO & URLs.
     • In the "Store URL" section, enter your site address in the "SSL Domain" field (without the https://, just www.domain.xyz).
  2. Activate SSL:
     • Go to Preferences > General settings.
     • At the top of the page, click on "Click here to use the HTTPS protocol before activating SSL mode."
     • A new page will open with your site in the secure HTTPS version.
  3. Force the use of SSL on the entire site:
     • Go back to Preferences > General settings.
     • Set the "Enable SSL" option to YES.
     • Also set "Force the use of SSL for all pages" to YES.

An old SSL certificate is displayed - clear the SSL cache

Web browsers cache SSL certificates to speed up navigation. Normally, this is not a problem. However, when you develop pages for your website or install a new certificate, the browser's SSL status may bother you. For example, you might not see the padlock icon in the browser's address bar after installing a new SSL certificate.

The first thing to do in this case is to make sure that the domain points to the server's IP address (A and AAAA records) and if it is still the wrong SSL certificate that is returned, clear the SSL cache:

• Chrome: go to Settings and click on Settings. Click on Show advanced settings. Under Network, click on Change proxy settings. The Internet Properties dialog box appears. Click on the Content tab. Click on Clear SSL state, then click OK. Refer to other tips in this other guide.
• Firefox: go to History. Click on Clear Recent History then select Active Connections and click on Clear Now.

Loss of CSS formatting

If the website is displayed without CSS style, analyze the page loading with the browser Console. There may be mixed content errors (mixed content) related to your styles .css, which you will need to resolve so that they are loaded correctly again.

Cloudflare

If you are using Cloudflare, refer to this other guide on the subject.