Microsoft KB Archive/895668

= Active Directory Users and Computers may stop responding when you use Active Directory Users and Computers on a server that is not running Exchange Server 2003 to change a user's proxy address =

Article ID: 895668

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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Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry



SYMPTOMS
When you use Active Directory Users and Computers on a server that is not running Microsoft Exchange Server 2003 to change a user's proxy address, Active Directory Users and Computers may stop responding.



CAUSE
This problem occurs if the first Exchange server on the Lightweight Directory Access Protocol (LDAP) query list is in a remote site. Active Directory Users and Computers uses the first Exchange server on the LDAP query list to change the user's proxy address. If the first server on the LDAP query list is in a remote site, Active Directory Users and Computers may stop responding.



RESOLUTION
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

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 software update 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 --   06-May-2005  02:04  6.5.7233.14    14,628,864  Maildsmx.dll After you install this hotfix, you must configure a new registry entry to apply this hotfix. To configure the new registry entry, follow these steps:  Click Start, click Run, type regedit in the Open box, and then click OK. Locate and then click the following registry subkey:

 On the Edit menu, point to New, and then click String Value. Name the new registry entry &quot;Preferred SA Server&quot;. Right-click Preferred SA Server, and then click Modify.</li> In the Value data box, type, and then click OK.

In this value,  is the name of the Exchange server that you want Active Directory User and Computers to use.</li> Close Registry Editor.</li></ol>

<div class="status_section">

STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

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MORE INFORMATION
After you apply this hotfix, when Active Directory Users and Computers tries to find an Exchange server, it checks whether the Exchange server that you specified in the Preferred SA Server registry entry is available. If this Exchange server is not available, Active Directory Users and Computers uses an LDAP query to obtain a server list. Active Directory Users and Computers selects a server from this list.

Notes
 * This hotfix will have no effect if you install this hotfix on an Exchange server.
 * The hotfix and registry change should be made on the member server or the remote client computer that is running the Microsoft Exchange version of Active Directory Users and Computers (Microsoft Exchange Management Tools).

Additional query words: XADM

Keywords: kbqfe kbhotfixserver kbexchsetup kbfix kbbug kbpubtypekc KB895668

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