Default offline address list exchange 2016 not updating
This helps make sure that Outlook 2007 (and higher) clients using Web access for OAB updates point to the right location.
This is located in the Exchange Management Console - Similarly, if your organization uses public folders, make sure that mailbox servers at each site are listed in the replication tab within public folder properties.
They should be inherited by any child folders of the OAB public folder by default, but it's not always the case. Remember, the slower your links are between the sites, the slower replication will be between servers.Thus, Exchange Global Address list updates will process slower as well.Any time you run into an Exchange Global Address List issue, the first place to investigate is the application event logs on the Exchange server that is generating your offline address book (OAB).There are too many event IDs to reference here, but most that are OAB generation-related should be resolved if you updated your Exchange server with the latest service pack and rollup.
Once installed, use the command line to navigate to the directory that you installed the tool to and run the following command: If this is working properly, you should receive a "listening" response.
You should also make sure that the OAB references on each site's Exchange server are correct.