UPDATE NOV 1, 2022: Cross-tenant mailbox migration is now generally available! See Cross-tenant User Data Migration is Now Generally Available for details.
Historically, wh...
Updated Jan 07, 2025
Version 10.0
Blog Post
Hello, I'm wondering how folks are pre-creating the MEU's in the target?
I've tried using the code included in the FAQ section of the Preview document, but it fails - it seems as if that code is expecting a different version of the NEW-MAILUSER cmdlet. For a while I was getting "Parameter set cannot be resolved using the specified named parameters" even though i was only using the params specified in MS's sample code. After this i tried omitting the -UserPrincipalName parameter and -SamAccountName parameter because the version of NEW-MAILUSER i have in scope after Connect-ExchangeOnline does not accept either of those parameters.
Is the sample code working for others? Does anyone have another script to do this critical task?