Oab not updating exchange 2016 ccr

Here we can browse for new server responsible for generating the OAB.

The mailbox server running as your OABGen server will contain an SMB share called Exchange OAB.

This is the folder where the client access servers acting as OAB distribution servers download the latest copy of the OAB.

This share points to C:\Program Files\Microsoft\Exchange Server\Exchange OAB by default. To change the schedule right click the address book, hit properties.

What the file distribution service does is copy the the OAB generated by the OABGen mailbox from \oabgenerationserver\Exchange OAB to the distribution server.

By default it is copied to C:\Program Files\Microsoft\Exchange Server\Client Access\OAB.

Lastly before I move on to the file distribution service, there is one more powershell command that comes in handy when dealing with OABGen.

That command is: Update-Offline Address Book This is a manual method for regenerating your offline address book.

To view what mailbox server is generating the OAB, open exchange management console, expand organisational configuration, click mailbox then click the offline address book tab.Ensure you add Authenticated Users with Read and List Content privilages or users will not be able to download the OAB and will revert to public folders if available.Server 2008 permissions for OAB: Auto discover is responsible for letting Outlook 2007 clients know where to download the OAB from.If I hold down CTRL and right click on the Outlook icon in my system tray I am able to click Test E-Mail Auto Configuration.Here you can see the location autodiscover is giving me for my OAB download.Also you can tell a client access server to manually download the latest OAB from the OABGen server for distribution. This directory points to C:\Program Files\Microsoft\Exchange Server\Client Access\OAB by default, the same place where the file distribution service places the files downloaded from the OABGen server.This can be done by running: Update-File Distribution Service servername Where servername is the name of the CAS distribution server you want to re-download the latest OAB. One thing that I have noticed though, is by default Authenticated Users do not have access to this folder, so how are they ment to download the OAB?Make sure you give authenticated users access to the OAB folder. on server 2008 it adds IIS_USRS (a special IIS group) to the OAB folder to allow users to download.But on Server 2003 as of this writing Exchange 2007 SP1 with Update Rollout 7 only grants by default Administrators and SYSTEM full access by default.Exchange 2007 has a new way of distribution the OAB (Offline Address Book) compared to previous versions of exchange. Below I will be explaining this process along with the steps to set it up.There are 4 components that make this work: OABGen is the process that creates or generates the offline address book.

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