Exchange 2007 event id 9360 - OALGen encountered an error while generating the changes.oab file for version 2 and 3 differential downloads of address list ;\global Address List'

Posted on 2011-05-09
Last Modified: 2012-05-11
I am getting an event 9360 2x per day,  It says to add a registry key, but then to remove it to prevent further full downloads.  Confused???  How long to leave; or is there a better solution?

OALGen encountered an error while generating the changes.oab file for version 2 and 3 differential downloads of address list '\Global Address List'.  The offline address list has not been updated so clients will not be able to download the current set of changes.  Check other logged events to find the cause of this error.
If the cause of the problem was intentional or cannot be resolved, OALGen can be forced to post a full offline address list by creating the DWORD registry key 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeSA\Parameters\OAL post full if diff fails' and setting it to 1 on this server.  When OALGen next generates the offline address list, clients will perform a full OAB download.  After that time, the registry key should be removed to prevent further full downloads.
- Default Offline Address List
Question by:PKayBPostiv
    LVL 31

    Expert Comment

    If you have no Outlook clients prior to Outlook 2003 SP2 then just Untick version 2 and 3 on the OAB as you don't need them.

    Otherwise add the reg key and force an OAB update, once that is complete the reg key can be removed
    LVL 8

    Expert Comment

    by:I Qasmi
    After this Restart the FDS service and check that OAB works fine and your Event still occurs

    Author Comment

    Great solution!
    LVL 5

    Accepted Solution


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