Usualy domain users use there domain credentials (
[email protected]) to login to their SharePoint online (Office 365).
Now there are another users from another company (domain) which try to login to this SharePoint online. They have to use
[email protected] to be able to login successfully. Now they think the user name is too long and want to skip entering
Is there a way to skip writing
I read this article, however I think we need to have SSO on.