A customer recently reported that passwords changed on premise weren’t being reflected in Office 365. Running a full sync in the FIMs client was the solution.
Log Name: Application
Date: 17/12/2014 13:34:06
Event ID: 6126
Task Category: Management Agent Run Profile
The management agent "Windows Azure Active Directory Connector" completed run profile "Delta Import Delta Sync" with a delta import or delta synchronization step type. The rules configuration has changed since the last full import or full synchronization.
To ensure the updated rules are applied to all objects, a run with step type of full import and full synchronization should be completed.
1. Navigate to the path C:\Program Files\Windows Azure Active Directory Sync\SYNCBUS\Synchronization Service\UIShell
2. Launch the “miisclient.exe” and click on Management Agents.
3. Right click on the Active Directory Connector and click on Run
4. On the run dialogue, select Full Sync and click on OK
Hope this helps.