To verify synchronization:
Check Office365 for synced ActiveDirectoryaccounts. Office365Portalaccounts should be replicated within a few minutes and will appear in the Office365Portal with a status of “Synced0with0Active0Directory”.
View synchronization results in IdentityManager. Details of the results of all management agent operations are shown on the Operationstab.
View synchronization entries in EventViewer. DirSync writes Directory Synchronization entries to the DirSync computer's event log.
If directory synchronization errors occur, they are reported in the eventlog and an email message is sent to the Office365 tenant administrator account