You cannot add users to a private address book in Outlook when the forest functional level is set to Windows Server 2003

Consider the following scenario:

�	You install Microsoft Exchange Server 2003 on a Microsoft Windows Server 2003-based computer.
�	The domain forest functional level is set to Windows Server 2003.

In this scenario, you cannot add users to the private address book (PAB) in Microsoft Outlook.

Note Forest functional levels let you enable features across all the domains in a forest. For more information about forest functional levels in Windows Server 2003, click the following article number to view the article in the Microsoft Knowledge Base:

This problem occurs because Exchange Server does not distinguish between the id and extid fields of the attribute cache when the current domain's forest functional level is set to Windows Server 2003. Therefore, the Active Directory directory service returns a MAPI mapping error.

Service pack information

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

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: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:

Prerequisites

No prerequisites are required.

Restart requirement

You must restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

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.

Windows Server 2003, x86-based versions

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   31-Jan-2004  00:26  5.2.3790.121    1,055,232  Esent.dll        
   31-Jan-2004  00:26  5.2.3790.125    1,527,296  Ntdsa.dll        

Windows Server 2003, Itanium-based versions

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   30-Jan-2004  08:27  5.2.3790.121    2,605,056  Esent.dll        IA-64
   30-Jan-2004  08:27  5.2.3790.125    4,037,632  Ntdsa.dll        IA-64 

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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