We have used Microsoft Forms succesfully for unlicensed users (parents of our students are part of Azure AD, but are not licensed for Office 365). They are on a separate domain, which is enabled for the tenant.
However, suddenly these users are shown an error message when filling out a form:
Which says something like 'The account is not enabled for MS Forms'.
I can't find a setting for fixing this. The only setting is enabling forms to enable for external users, that is enabled. Is there another setting I'm missing, besides assigning a license for these users (which should not be necessary for filling out forms, according to MS: "Removing the license from a user will prevent the user from creating forms in Microsoft Forms, but they can still respond to forms created by others".
