Duplicate users occasionally appear in the Global Address List in Exchange 2000 Server (837165)
The information in this article applies to:
- Microsoft Exchange 2000 Server
SYMPTOMSAfter you configure the Microsoft Exchange 2000 Server Active Directory Connector (ADC) to replicate information from Microsoft Exchange Server 5.5 to the Active Directory directory service and to replicate information from Active Directory to the Exchange Server 5.5 directory, you experience both of the following symptoms: - Duplicate users appear in the Exchange Global Address List.
- One or more events that are similar to the following appear in the application event log on the computer that is running the ADC service:
Event 1Event ID: 8024
Event Category: LDAP Operations
Event Source: MSADC
Event Type: Error
Description: LDAP Search Initial Page on directory directoryName at base 'o=organization' with filter '(msExchADCGlobalNames=NT5:GUID*)' was unsuccessful.
Directory returned the LDAP error:[0x51] Server Down.
Event 2Event ID: 8024
Event Category: LDAP Operations
Event Source: MSADC
Event Type: Error
Description: LDAP Search Initial Page on directory directoryName at base 'o=organization' with filter '(distinguishedName=cn=Recipients,ou=organizationalUnit,o=organization)' was unsuccessful.
Directory returned the LDAP error:[0x51] Server Down.
Event 3Event ID: 8020
Event Category: LDAP Operations
Event Source: MSADC
Event Type: Warning
Description: LDAP Search of directory directoryName at base 'cn=Recipients,cn=Recipients,ou=organizationalUnit,o=organization' using filter '(objectclass=*)' was unsuccessful. Directory returned the LDAP error:[0x51] Server Down.
Event 4Event ID: 8271
Event Category: Replication
Event Source: MSADC
Event Type: Information
Description: Successfully replicated the object 'OU=Recipients,OU=organizationalUnit,OU=recipients,DC=corp,DC=example,DC=com' to object 'cn=Recipients,cn=Recipients,ou=organizationalUnit,o=organization'.
Event 5Event ID: 8270
Event Category: LDAP Operations
Event Source: MSADC
Event Type: Error
Description: LDAP returned the error [44] Already Exists when importing the transaction
dn: cn=Username,cn=Recipients,cn=Recipients,ou=organizationalUnit,o=organization
changetype: Add
admin-display-name:Username
distinguishedname:OU=Username,cn=Recipients,cn=Recipients,ou=organizationalUnit,o=organization
createtimestamp:20030327164659.0Z
objectguid:GUID
replication-signature:GUID
msexchadcglobalnames:forest:o=organizationGUID
: EX5:cn=Username,cn=Recipients,ou=organizationalUnit,o=organization:container$to...
: NT5:GUID
: FOREST:GUID
container-info:-2147483647
ReplicatedObjectVersion:0
Event 6Event ID: 8271
Event Category: Replication
Event Source: MSADC
Event Type: Information
Description: Successfully replicated the object 'CN=user,OU=Username,OU=Recipients,OU=organizationalUnit,OU=Exchange Migration,DC=corp,DC=example,DC=com' to object 'cn=Username,cn=Recipients,cn=Recipients,ou=organizationalUnit,o=organization'.
(Connection Agreement 'CAname' #1264)
CAUSEThis problem occurs if Lightweight Directory Access Protocol (LDAP) errors occur during replication between Active Directory and the Exchange Server 5.5 directory. The ADC creates duplicate objects in the Exchange Server 5.5 directory when all the following conditions are true: - LDAP connectivity is lost when the ADC searches for objects in the Exchange Server 5.5 directory.
- LDAP connectivity is restored when the ADC tries to create new contacts because of the unsuccessful search for a matching object in the Exchange Server 5.5 directory.
Note In this scenario, the unsuccessful search for a matching object in the Exchange Server 5.5 directory occurs because of the loss of LDAP connectivity.
The Exchange 2000 ADC incorrectly considers the unsuccessful search that occurs because of the loss of LDAP connectivity the same as a successful search where no matching object is found in the Exchange Server 5.5 directory. RESOLUTIONHotfix informationTo resolve this problem, obtain the August 2004 Exchange 2000 Server Post-Service Pack 3 update rollup.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
870540
Availability of the August 2004 Exchange 2000 Server Post-Service Pack 3 update rollup
PrerequisitesBecause of file dependencies, this update requires Microsoft
Exchange 2000 Server Service Pack 3 (SP3).
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
301378
How to obtain the latest Exchange 2000 Server service pack
Restart requirementYou do not have to restart your computer after you apply this hotfix. However, the following service is automatically stopped and then restarted when you apply this hotfix: - Microsoft Active Directory Connector
Hotfix replacement informationThis hotfix does not replace any other hotfixes. File information The English version of this hotfix has the file attributes (or later) 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
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30-Mar-2004 23:26 6.0.6581.0 757,760 Adc.exe
STATUSMicrosoft has confirmed that
this is a problem in Microsoft Exchange 2000 Server.
Modification Type: | Minor | Last Reviewed: | 10/3/2005 |
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Keywords: | kbHotfixServer kbQFE kbQFE kbfix kbExchange2000preSP4fix kbbug kbExchange2000preSP4julybarFix KB837165 kbAudITPRO |
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