When viewing the status of a mailbox's in calendar synchronization the following is displayed.
Quest.MigrationManager.Exchange.Basis.MapiLogonException: Mapi logon failed. | at Quest.MigrationManager.Exchange.Basis.MAPISessionCreator.InternalCreateSessionAndLogon
All permissions are set correctly and MFCMAPI can logon to the mailbox
To resolve this issue we must modify the Migration Agent for Exchange MAPI Assistant COM+ application.
Follow the steps below: