OALGen encountered an error while generating the %1 file for version 2 and 3 differential downloads of address list ‘%2’. 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\\%3\\%4’ 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. %5

Details
Product: Exchange
Event ID: 9360
Source: MSExchangeSA
Version: 8.0
Symbolic Name: evtOALGenDiffErrorNoPost
Message: OALGen encountered an error while generating the %1 file for version 2 and 3 differential downloads of address list ‘%2’. 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\%3\%4’ 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.
– %5
   
Explanation

For Microsoft Outlook clients that are running Office Outlook 2003 Service Pack 1 (SP1) or earlier, if a Microsoft Exchange server that is running Exchange Server 2003 Service Pack 2 (SP2) determines that a differences download is more efficient, and if a differences file cannot be generated on a server that is running Exchange 2003 SP2, Exchange Server will not automatically force a full offline address book (OAB) download. Instead, Exchange logs MSExchangeSA event 9360. MSExchangeSA event 9360 indicates that it was unable to produce a differences file and will not produce a full OAB file.

When this event is logged, the users running Outlook 2003 SP1 or earlier will not be able to receive OAB updates until the problem is corrected.

The offline address list has not been updated, so clients will not be able to download the current set of changes.

   
User Action

To resolve this error, do one of the following:

  • In Event Viewer, examine the Application log for events that occur before and after MSExchangeSA event 9360. These related events may help you discover the reason that Exchange cannot generate a differences file for your Outlook clients that are running Outlook 2003 SP1 or earlier.

  • Generate a full OAB download file when a differences file cannot be generated:

    Incorrectly editing the registry can cause serious problems that may require you to reinstall your operating system. Problems resulting from editing the registry incorrectly may not be able to be resolved. Before editing the registry, back up any valuable data.

  • Perform the following procedure to edit the registry.

    1. On the Exchange server, start Regedit.exe.

    2. Open the following registry key:

    3. HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeSA\Parameters

    4. Right-click Parameters, point to New, and then click DWORD Value.

    5. For the new value name, type OAL post full if diff fails.

    6. Double-click OAL post full if diff fails. In Value data, type 1. Click OK.

    7. Close Regedit.exe.

Before you edit the registry, and for information about how to edit the registry, see Microsoft Knowledge Base article 256986, Description of the Microsoft Windows Registry.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.

   
   
Version: 6.5.7596.0
Message: OALGen encountered an error while generating the %1 file for version 2 and 3 differential downloads of address list ‘%2’. 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\\%3\\%4’ 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. %5
   
Explanation

For Microsoft® Outlook® clients that are running Office Outlook 2003 Service Pack 1 (SP1) or an earlier version, if an Exchange server that is running Exchange Server 2003 Service Pack 2 (SP2) determines that a differences download is more efficient, and if a differences file cannot be generated on a server that is running Exchange Server 2003 SP2, Exchange Server will not automatically force a full offline address book download. Instead, Exchange logs MSExchangeSA event 9360. MSExchangeSA event 9360 indicates that it was unable to produce a differences file and will not produce a full offline address book file.

When this event is logged, the users running Outlook 2003 SP1 or an earlier version will not be able to receive offline address book updates until the problem is corrected.

   
User Action

To resolve this error, use one of the following procedures:

  • In event viewer, examine the Application log for events that occur before and after MSExchangeSA event 9360. These related events may help you discover the reason that Exchange cannot generate a differences file for your Outlook clients that are running Outlook 2003 SP1 or an earlier version.

  • Change the default behavior of the offline address book (OAB) server so that full OAB downloads are generated when a differences download cannot be generated. For more information about how to configure Exchange to generate a full OAB download when a differences download cannot be generated, see How to Generate a Full Offline Address Book Download File When a Differences File Cannot Be Generated in the Offline Address Book Best Practices Guide.

For information about best practices for Exchange Server 2003 offline address books, see the Offline Address Book Best Practices Guide.

Related:

Leave a Reply