We have an interesting community where a majority of the participants are current customers and can thus use Single Sign On through their portal. However, we also have some prospects and other users that are not current customers and do not have a portal to log on through and currently cannot participate in anything.
My question is, is there a way to use BOTH SSO AND self-registration options for the same community?
By enabling external groups, you are able to have both federated and non-federated users log in when SSO is enabled (Managing External Groups). Unfortunately, there is not a setting that will allow users to self-register when SSO is enabled.