Log Name: Application Source: MSExchangeSA Date: 6/25/2010 5:05:51 AM Event ID: 9360 Task Category: OAL Generator Level: Error Keywords: Classic User: N/A Computer: CHIT.versar.local Description: 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. - VSR Offline Address Book Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="MSExchangeSA" /> <EventID Qualifiers="49152">9360</EventID> <Level>2</Level> <Task>13</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2010-06-25T09:05:51.000Z" /> <EventRecordID>744</EventRecordID> <Channel>Application</Channel> <Computer>CHIT.versar.local</Computer> <Security /> </System> <EventData> <Data>changes.oab</Data> <Data>\Global Address List</Data> <Data>SYSTEM\CurrentControlSet\Services\MSExchangeSA\Parameters</Data> <Data>OAL post full if diff fails</Data> <Data>VSR Offline Address Book</Data> </EventData> </Event> Mixed Exchange 2007 and 2003. The 2003 box is to communicate with GroupWise until it is shutdown. We created a new OAB and still have the above error. I see docs OALGen encountered an error for version 2 and 3 downloads but there referencing Exchange 2003. Do we still follow OALGen encountered an error for version 2 and 3 downloads for a 2007 server? We also see the error on the Exchnge 2003 server event logs. Also, the database properties, client setting, OAB still point to hte Default Offline Address List. Should this be the new VSR Offline Address Book?

You can turn up diagnostic logging to maybe get a better idea of what's wrong. You need not generate the OAB on both servers. You can discontinue it on one, and ensure that you have replicas of the OAB folders in all public stores. -- Ed Crowley MVP "There are seldom good technological solutions to behavioral problems." . "DAlbaugh" wrote in message news:b866ef6a-b3aa-47fd-8d0b-1acd011d607e... Log Name: Application Source: MSExchangeSA Date: 6/25/2010 5:05:51 AM Event ID: 9360 Task Category: OAL Generator Level: Error Keywords: Classic User: N/A Computer: CHIT.versar.local Description: 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. - VSR Offline Address Book Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="MSExchangeSA" /> <EventID Qualifiers="49152">9360</EventID> <Level>2</Level> <Task>13</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2010-06-25T09:05:51.000Z" /> <EventRecordID>744</EventRecordID> <Channel>Application</Channel> <Computer>CHIT.versar.local</Computer> <Security /> </System> <EventData> <Data>changes.oab</Data> <Data>\Global Address List</Data> <Data>SYSTEM\CurrentControlSet\Services\MSExchangeSA\Parameters</Data> <Data>OAL post full if diff fails</Data> <Data>VSR Offline Address Book</Data> </EventData> </Event> Mixed Exchange 2007 and 2003. The 2003 box is to communicate with GroupWise until it is shutdown. We created a new OAB and still have the above error. I see docs OALGen encountered an error for version 2 and 3 downloads but there referencing Exchange 2003. Do we still follow OALGen encountered an error for version 2 and 3 downloads for a 2007 server? We also see the error on the Exchnge 2003 server event logs. Also, the database properties, client setting, OAB still point to hte Default Offline Address List. Should this be the new VSR Offline Address Book? Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."