Hi Friends We have foudn that OAB is not updating in outlook clients ,We are using outlook 2007,and exchange server 2007 running in NLB,the new users created are not showing in the address book, I deleted the OAB files and tried to download a new address book but outlook send/receive pops up and no progress takes place i waited for more than 2 hours ,and it does not gives any error.have any ony faced this kind of issue ,is there any suggestion to solve this Abubakar Mirasa Dubai,UAE Microsoft Specalist

Hi If outlook is not in cached mode it will pick up new accounts in GAL from a GC within minutes. Otherwise it uses OAB. If you run, Set-EventLogLevel "MSExchangeSA\OAL Generator" -Level medium before running Update-OfflineAddressBook -Identity "Default Offline Address Book" you may look for the related events in eventlog. Check for any errors to debug it in a better wayRegards from www.windowsadmin.info

Thanks for your reply i know offline address book is updated in 24 hours,we are using outllok in cached mode how do i go and change the setting of outlook for all the users for using cacahe mode.But i am not able to see new accounts which were created before 2 months,and its not only for individual users its hapenning for all the users none of the users OAB is getting updated from more than a monthAbubakar Mirasa Dubai,UAE Microsoft Specalist

If you cant see users from over 2 months ago, maybe you should recreated the OAB and start again. Sukh

Hi, Did you use the default OAB from the server? I suggest you delete it and re-create a new one. And once they are done, EMC will trigger the update of OAB. ThanksPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Restart file distribution service on the affected CAS server.

Hi evryone , I traced this problem and solved it sucessfully, The problem was we had two mailbox server running in cluster,node A and Node B,Initially Node A was active and Node B was passive,Somehow long back the Nobe A has become passive and Node B became active ,which we did not notice from many days,from that day itself i CAS server has stopped pulling the OAB from Node A since it became passive,after lot of research in internet this weekend i made Noda A active,and within seconds all the problem flashed away and OAB started replicating properly once again, Once again thanks to everyone for you tips on this problem Abubakar Mirasa Dubai,UAE Dubai, Microsoft Specalist