I have been trying to kick off a cutover migration from an 2011 SBS server (Exchange 2010) to Office365.
Unfortunately, I can't seem to get past this error. The user on both ends is the main administrator, and has full permissions to everything. Of course, the Microsoft 'troubleshooting' is useless, because they don't actually have all of the errors listed in there.
All of the users show this.
Unable to provision jobs from the current recipient. The owner recipient isn't a valid user. --> Unable to provision jobs from the current recipient. The owner recipient isn't a valid user.
Originally, the users were created on O365, but I purged them out, emptied the SoftDelete, purged from Azure Active Directory, and made sure that nothing shared the same user name or email address as the accounts being migrated.
Same error.
Created another user, granted full access, gave it the appropriate Exchange organization permissions.
Same error.
Does anyone here have any suggestions on where to go next?