OAB not updating in Exchange 2010 SP3

Hi everyone,

ever since we upgraded to SP3 from SP1, I am having event logs 9126 and 9337 stating that OABGen encountered error 80040402 while calculating the offline address book for address list 'global address list'. This offline address book wont be available for client download.


OABGen did not find any recipients in address list 'global address list'. The offline address list will not be generated.

Any ideas what to do ?
Exchange UserSystems AdministratorAsked:
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How the OAB is generated? Is it using Public folders or web based?
Exchange UserSystems AdministratorAuthor Commented:
Web based
Amit KumarCommented:
Please remove and add your mailbox server in OAB and then try to update it.

Also verify if you have upgraded all servers with SP3, please confirm which RU level you have installed for SP3 as well.
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Exchange UserSystems AdministratorAuthor Commented:
We have RU10 on all servers. Can you please let me know how to remove it and if I can do this task during production ?
Amit KumarCommented:
you can do such changes in production as there will not be any impact.

Better idea is create a new OAB and use required parameters then set it default by right clicking on OAB. then try to generate and closely monitor if there are any error.

Open EMC--> Org Configuration-- Mailbox -- Offline Address book --

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Exchange UserSystems AdministratorAuthor Commented:
It didnt work. I recreated the OAB but I am still getting the same errors.
Exchange UserSystems AdministratorAuthor Commented:
I've requested that this question be deleted for the following reason:

Could not find a solution. Will post again with more details.
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