I have 2 Exchange 2013 mailbox servers as members of a DAG, with different Active Databases on both server. One of the servers gets the Offline addressbook however the other one the addressbook files are over a month old. I have restarted the Exchange Mailbox Assistant on the problem server and tried running the Update-OfflineAddressBook powershell command. The problem server is not updating at all. I have even gone to the point of renaming the E:\Exchange\ClientAccess\OAB\{OfflineAddressBookGuid} folder. The server does not generate a new one and the files in here at over a month old.
Any ideas on how I can troubleshoot this one?