Exchange Migration Error: MigrationTransientException: MapiExceptionMdbOffline

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  Make sure these mailboxes have the home MDB in Exchange 2010, to confirm it, run this command: Get-Mailbox “mailbox name” | ft Name, DataBase -Auto   The Microsoft Exchange replication service is responsible for the mailbox migration. Sometimes restarting this service can solve the mailbox migration issue.   Please check whether there are any […]

Remove Disconnected/Soft Deleted Mailboxes from Exchange 2010/2013 Database

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When moving mailboxes between Exchange databases the move complete with a warning. This is because Exchange server sometimes does not fully delete the mailboxes from the source database immediately upon completion of the move the source mailbox database is switched to a “soft-deleted” state. To resolve this you need to remove the disconnected or soft deleted […]

Exchange 2016: A version mismatch error occurred while moving mailboxes

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When migrating mailboxes from Exchange 2013 to Exchange 2016, the following error (A version mismatch) may occur: “A version mismatch was detected (Actual: 6, Expected: 5)” The following message appears in the Exchange 2013 server log:   2017-04-23T20: 37: 21.432Z, 6, Default, Error, “,,”, “Register migration batch failed, at exception Microsoft.Exchange.Migration.MigrationServiceHelper.SafeInvokeImplMethod (Action method, MigrationServiceRpcMethodCode method […]