Administrators need to know that Moodle 3.4 changes the way https works.
For a few years there has been a setting that administrators can use on a Moodle site for ‘Use HTTPS for logins’ (loginhttps). This has been removed in Moodle 3.4.
- MDL-42834 – Deprecate loginhttps. Sites that used to use this setting will now be served via https always
It is recommended that all Moodle sites now use full SSL (Secure Socket Layer) certificates.
This is just part of the internet today, and most browsers will now report sites as insecure if they do not use SSL, encrypting the exchange of data.
In addition, the HTTPS conversion tool will convert any embedded HTTP content (not links) on your site to HTTPS in order for it to display correctly on your HTTPS site.