Hi Sebastian and Glenn (and anyone else),
I have the exact same issue and I'm hoping that in the last two years this issue has been addressed.
To clarify, some of my courses are set to self-enrol only, some are both guest access and self-enrol. Only if a user self-enrols will they be able to get a certificate on completing the SCORM content. However with guest access also allowed for the course, the logged in user is not prompted to self-enrol on the course (whereas if guest access is not enabled for that course then they are).
I have included text instructions on the launch page (prompting the use to click on the Enrol me on this course link) but I'm looking for a better solution. Is there any way for logged in users to be prompted to self-enrol in courses with guest access in the same way that they are prompted for courses without guest access?
FYI - I'm using Moodle 2.6.
Any help greatly appreciated!!