MAGE - Migration to Office 365 (0365) fails with System.Management.Automation.RemoteException: ######GUID##### isn't a mailbox user
Error from Mage log:
""System.Management.Automation.RemoteException: 0eb397f9-2856-4ecb-a294-86f80d612009 isn't a mailbox user. at Dell.MigrationManagerForExchange.General.PwrShell.PSInternal.ExamResults()
at Dell.MigrationManagerForExchange.General.PwrShell.PSInternal.RunCommandInternal(String command, PSParam[] list)
at Dell.MigrationManagerForExchange.General.PwrShell.PSConnectorBase.RunCommand(String command, PSParam[] list)
at Dell.MigrationManagerForExchange.General.PwrShell.PSConnectorExchange.GetMailbox(String identity)
at Quest.MigrationManager.Exchange.Agent.Jobs.TargetMailbox.get_MailboxFields()
at Quest.MigrationManager.Exchange.Agent.Jobs.TargetMailbox.get_Ledn()
at Dell.MigrationManagerForExchange.Shared.Heart.StatisticHelper.GetMailboxStatistic(IMailbox mailbox, IPsExchangeConnector conn)
at Quest.MigrationManager.Exchange.Agent.Jobs.O365Job.GatherSizeInfo(PersistentStatItem item)"
This error occurs during migration to Office 365.
This happens because mailbox creation in Office 365 takes some time after license has been applied and MAgE tries to migrate data into mailbox shortly after applying the license.This error can be ignored and should go away within hours at most.
In future updates the MAgE logic will be fixed to try migrate data not sooner than 15 minutes after applying the license.
