Hi all, I am in full migration from Exchange 2007 to Exchange 2013 and everything went correctly.

I have migrated several mailboxes and are working well. But a few days ago, when I try to migrate a mailbox I get the following error and can not migrate:

"Could not find a valid mailbox migration for this organization"


Do you know that you can be?

Hi

Have a look here:

http://theucguy.net/the-migration-mailbox-for-the-organization-is-either-missing-or-invalid-error-during-exchange-2013-mailbox-move/

Hello, when I run get-mailbox -arbitration, the answer is an empty result

Hi Yupikaiey..

Check out the solution provided by Microsoft to resolve the issue

https://support.microsoft.com/en-us/kb/2812509?wa=wsignin1.0

Further queries are welcome

Joe

thats right. Migration mailbox is missing