I have an issue with the following:
I have outlook live (for friends and family) and there I have added an extra domain. Now created accounts for my brother and his family. 3 accounts went fine (one of them reported that there was a live ID like that already but merging was possible). All 3 accounts are able to log onto the mailbox using OWA via outlook.com/domain.com url. Now my brother's account also asked to be merged and I did so when creating a mailbox but he is not able to get it, the error is the this:
This account can't be used to access Outlook.com
You're currently signed in with an Office 365 email account, which can't be used with Outlook.com. Please click here to sign out of your Office 365 account, then use another Microsoft account to sign in to Outlook.com (for example, your hotmail.com, live.com, or msn.com account).
My brother has been using this live ID for a while now with no mailbox attached to it, He does have xbox live and windows phone. I never used this domain with Office365 tenant...
Can someone from MSFT help me here?
thanx in advance