On a new install of Exchange I am getting multiple Sync Issues on clients:
Synchronizer version 126.96.36.19904
Synchronizing mailbox <client name here>
Then in red is says Microsoft Offline Address book
I get this over and over every few minutes.
On a clent machine in Event Viewer I see errors: 40961, 40960 repeated several times. On the Exchange server I see no errors in the Event Viewer.