Microsoft KB Archive/895476

= Outlook may receive a full download instead of an incremental download when Outlook downloads the offline address book in Exchange Server 2003 =

Article ID: 895476

Article Last Modified on 10/25/2007

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APPLIES TO


 * Microsoft Exchange Server 2003 Standard Edition
 * Microsoft Exchange Server 2003 Enterprise Edition

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SYMPTOMS
When Microsoft Outlook downloads the offline address book, Outlook may receive a full download instead of an incremental download. Additionally, if you use Microsoft Office Outlook 2003 Service Pack 1 (SP1) to download the offline address book, an event that is similar to the following event may be logged in the Application log on the computer that is running Outlook 2003 SP1: Event Type: Information

Event Source: Outlook

Event Category: None

Event ID: 27

Description: Starting OAB download. (See event data). 0050: 7a 65 61 7a 61 74 61 7a zeazataz 0058: 70 69 61 7a 00 00 00 00 piaz....



CAUSE
This problem may occur if the relative distinguished name of a user or of a public folder that is not hidden from the global address list (GAL) is more than 64 bytes. When Outlook downloads the offline address book, a signature of the offline address book is created by using the relative distinguished name of a user or of a public folder that is not hidden from the GAL. If the relative distinguished name is more than 64 bytes, the relative distinguished name is truncated by Oabgen.dll. When the relative distinguished name is truncated, the signature of the offline address book does not match the stored data. Therefore, a full download occurs.

Note The relative distinguished name is the text that appears after the last occurence of &quot;cn=&quot; in the legacyExchangeDN attribute.



Service pack information
To resolve this problem, obtain the latest service pack for Exchange Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

836993 How to obtain the latest service packs for Exchange Server 2003

Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
Because of file dependencies, this hotfix requires Microsoft Exchange Server 2003 Service Pack 1.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

836993 How to obtain the latest service packs for Exchange Server 2003

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version            Size    File name --  02-Apr-2005  03:31  6.5.7233.0         58,880  Oabgen.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Exchange Server 2003 Service Pack 2.



MORE INFORMATION
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

817903 New naming schema for Exchange Server software update packages

Additional query words: XCCC oab

Keywords: kbqfe kbhotfixserver kbexchdirectory kbfix kbbug kbpubtypekc KB895476

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