If you try to retrieve mail attributes and mhsORAddress attributes from a third-party Lightweight Directory Access Protocol (LDAP) directory, you may receive the following error messages:

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This problem occurs because DsClient for Windows NT 4.0 does not recognize a syntax of 1.3.6.1.4.1.1466.115.121.1.33 (LDAPTYPE_CASEIGNORESTRING); therefore, it cannot retrieve attributes that use this syntax. Because Microsoft Windows 2000 does not use this syntax for attributes that are defined in the Active Directory schema, this problem is only likely to occur when you try to access third-party LDAP directories.

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A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix 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     SP level
   ------------------------------------------------------------------
   25-Apr-2002  22:08  5.0.2195.5655  123,664  Adsldp.dll    SP6a
   25-Apr-2002  22:08  5.0.2195.5655  130,832  Adsldpc.dll   SP6a   
   30-Jan-2002  00:52  5.0.2195.4016   62,736  Adsmsext.dll  SP6a
   25-Apr-2002  22:08  5.0.2195.5011  125,712  Wldap32.dll   SP6a
				

NOTE: Because of file dependencies, this hotfix requires Windows NT 4.0 Service Pack 6a (SP6a).

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Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

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