I have a Sharepoint Online site based on an "Office Web Apps with SharePoint Plan 1" subscription.
I have succesfully invited an external user with a Microsoft free email address in the hotmail.com domain.
But I am having trouble inviting another external user with a newly created microsoft free account in the outlook.dk domain.
Is outlook.dk supposed to be a supported email domain for external users?
If not: Which are the supported microsoft emails domains for Sharepoint Online external users?
Also: Will these external users be able to setup a different email address on which to receive alerts?
What actually happpens when I try the invitation is this:
I copy-paste the outlook.dk adress into the Share Site form and it is immediately underlined. When I press OK, a little rotating wait-animation appears and I wait for a couple of minutes. Then the form just disappears. The user never receives the invitation.