Hello Mathieu (and anyone who comes to this thread subsequently) This discussion is a follow up from the forum thread mentioned by Visvanath above where he asks how to have his guest access courses available immediately without the need to click on the log in as guest button.
I suggested he use "autologinguests" and showed my MoodleCloud site as an example. This then prompted us to discuss here the strange fact that, if your site has forcelogin - yes, as all the MoodleCloud sites do, then you would expect not to be able to do this, but in fact, the autologinguests setting means you can have guest access on a site where you are not allowed to see the front page before logging in.
I looked in the tracker and found several very old issues about this: for example MDL-35359 and MDL-10850 which seem to suggest that this is the expected behaviour: Sites with forcelogin can indeed still have autologinguests. (I am about to edit the documentation to clarify this)
