Error in adding new shared mailbox

Hi,

I had the same problem Friday 11/03 and still have it this morning.

I'm currently preparing a brand new migration to Office 365 from Exchange 2013 with hybrid mode.

On Friday I tested my first migration of a test mailbox and had the same error message. I searched the web and found NOTHING. 

This morning I serached the web and found your question... I was wondering what was wrong in my configuration but finally it may be a global problem on the cloud !??

Did you successed in migrations before friday ? For my part I experienced the problem on my first test migration so I'm uanble to tell if it was working before.

Do you have any more informations on your side about this problem ?

I'm sorry you have this problem but I'm also happy not to be alone ;)

Have a good day.