Oab not updating exchange 2016 ccr

If Update-Offline Address Book does not update the data correctly, try updating the Global Address List using: Update-Global Address List -Identity "Global Address List"The exchange file distribution service is a service that runs only on client access servers marked as distribution servers.To configure a client access server as a distribution server simply open exchange management console and navigate to Organisational Configuration -- Here you can simply add in client acces servers to the list.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.As a user you will not be able to access it as only exchange computer accounts have NTFS rights to it. You can configure this to always run using powershell also however I do not recommend this as for large organisations OAB generation can result in extra load.I recommend leaving it on the default setting 5AM as nightly backups are ususally finished by this point and users dont ususally start work till around 6am at the earliest.What the file distribution service does is copy the the OAB generated by the OABGen mailbox from \oabgenerationserver\Exchange OAB to the distribution server.

Note: This command updates the Offline Address Book from the Global Address List data that is generated from the Global Catalog.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.You can see in my organisation, KBOMBSERVER is generating the OAB.To change which mailbox server is responsible for generating the OAB, simply right click on the address book and click Move.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.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.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?

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