Hi there,
I have setup a multi-tenancy environment following the correct procedures, everything setup through powershell. For some reason certain users are needing to enter the full UPN username@domain.com in order to log in to OWA. Username will not work. All users were created the exact same way which is why this seems peculiar. Anyone aware of a way to change this back for the users this affects.
Thanks for any help.
Callum