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QUERYCLIENTCERT() Does Not Make a Callback on Windows 2000 Wldap32.dll
Article ID: 811288 - View products that this article applies to.
You cannot implement Lightweight Directory Access Protocol (LDAP) Secure Sockets Layer (SSL) client-side authentication on Windows 2000 because the callback that is defined in LDAP_OPT_CLIENT_CERTIFICATE is never called by the Windows 2000 version of Wldap32.dll.
The QUERYCLIENTCERT function is a client-side function that permits the server to request a certificate from the client when it is establishing an SSL connection.
The QUERYCLIENTCERT function does not make callbacks in the Windows 2000 version of Wldap32.dll.
The Microsoft Windows XP version of Wldap32.dll works correctly with QUERYCLIENTCERT calls.
Service Pack InformationTo resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/260910/EN-US/ )How to Obtain the Latest Windows 2000 Service Pack
Hotfix InformationA supported hotfix is 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.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language. 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 -------------------------------------------------------- 08-Jan-2003 11:06 5.0.2195.6109 124,688 Adsldp.dll 08-Jan-2003 11:06 5.0.2195.5781 131,344 Adsldpc.dll 08-Jan-2003 11:06 5.0.2195.6109 62,736 Adsmsext.dll 08-Jan-2003 11:06 5.0.2195.6143 358,672 Advapi32.dll 08-Jan-2003 11:06 5.0.2195.6094 49,936 Browser.dll 08-Jan-2003 11:06 5.0.2195.6143 135,952 Dnsapi.dll 08-Jan-2003 11:06 5.0.2195.6134 96,016 Dnsrslvr.dll 08-Jan-2003 11:06 5.0.2195.6125 45,328 Eventlog.dll 08-Jan-2003 11:06 5.0.2195.6161 147,216 Kdcsvc.dll 22-Nov-2002 10:45 5.0.2195.6137 203,536 Kerberos.dll 21-Aug-2002 08:27 5.0.2195.6023 71,248 Ksecdd.sys 09-Dec-2002 14:04 5.0.2195.6155 507,664 Lsasrv.dll 09-Dec-2002 14:04 5.0.2195.6155 33,552 Lsass.exe 22-Nov-2002 10:20 5.0.2195.6137 109,328 Msv1_0.dll 08-Jan-2003 11:06 5.0.2195.5979 307,472 Netapi32.dll 08-Jan-2003 11:06 5.0.2195.6161 360,720 Netlogon.dll 08-Jan-2003 11:06 5.0.2195.6161 923,408 Ntdsa.dll 08-Jan-2003 11:06 5.0.2195.6161 391,440 Samsrv.dll 08-Jan-2003 11:06 5.0.2195.6120 130,320 Scecli.dll 08-Jan-2003 11:06 5.0.2195.6160 303,888 Scesrv.dll 08-Jan-2003 11:06 5.0.2195.5859 48,912 W32time.dll 04-Jun-2002 13:32 5.0.2195.5859 57,104 W32tm.exe 08-Jan-2003 11:06 5.0.2195.6163 123,664 Wldap32.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/265173/EN-US/ )The Datacenter Program and Windows 2000 Datacenter Server Product
Article ID: 811288 - Last Review: February 21, 2007 - Revision: 1.9