Cached mode gal not updating
However, these items are not removed from the server.
To stop the Modification Resolution logs, configure a registry key as described in the following table, and set the value to 0: This issue occurs when Outlook 2010 is running in Cached Exchange Mode with a retention policy that is applied to a folder (for example, the Deleted Items folder).
In this guide, the relevant timings are explained and instructions are given in how you can directly force an update and resync, which can be very handy when troubleshooting or when you work in an Exchange environment which sees a lot of user mailbox mutations.
This means that in the worst possible scenario, an update to the Address Book won’t become available to the user until 48 hours after the change.
In addition to this there a a few methods by which your Outlook clients get the offline address book. Outlook 2003 (and older)* clients get their OAB from a public folder, Outlook 2007 (and newer) clients can get their OAB from ‘Web-based distribution’ (basically form the website on the Exchange (or Exchange CAS) server.
So there are three factors stopping you seeing that new user on the GAL (, however if that’s not an option, read on). Force your Outlook Client to Download the Offline Address book. Check that the OAB is getting distributed from the Exchange/CAS server. Note: Make sure the Generation Server is set to a server that exists, and it’s online.