Program stops responding when you try to access an LDAP server by using Windows 2000

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When you try to access a multithreaded program that is using the LDAP library WLDAP32.DLL (or dependent technology like ADSI), the program stops responding.
This problem occurs because the LDAP library uses locks to help to protect its connection list, its request list, and its socket list. Different code paths can lead to different lock acquisition order causing a deadlock.

Hotfix information

A 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: Note 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.


You must have Microsoft Windows 2000 Service Pack 3 installed before you apply this hotfix.

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) 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   ----------------------------------------------------------   10-Feb-2004  15:43  5.0.2195.6896    124,688  adsldp.dll   10-Feb-2004  15:43  5.0.2195.6896    132,368  adsldpc.dll   10-Feb-2004  15:43  5.0.2195.6896     63,760  adsmsext.dll   10-Feb-2004  15:43  5.0.2195.6876    381,712  advapi32.dll   10-Feb-2004  15:43  5.0.2195.6866     69,904  browser.dll   10-Feb-2004  15:43  5.0.2195.6824    136,464  dnsapi.dll   10-Feb-2004  15:43  5.0.2195.6876     96,528  dnsrslvr.dll   10-Feb-2004  15:43  5.0.2195.6883     47,376  eventlog.dll   10-Feb-2004  15:43  5.0.2195.6890    148,240  kdcsvc.dll   08-Dec-2003  15:28  5.0.2195.6881    206,096  kerberos.dll   20-Sep-2003  16:32  5.0.2195.6824     71,888  ksecdd.sys   30-Jan-2004  13:00  5.0.2195.6895    512,272  lsasrv.dll   30-Jan-2004  13:00  5.0.2195.6895     33,552  lsass.exe   16-Oct-2003  16:33  5.0.2195.6866    114,960  msv1_0.dll   10-Feb-2004  15:43  5.0.2195.6893    307,984  netapi32.dll   10-Feb-2004  15:43  5.0.2195.6891    361,744  netlogon.dll   10-Feb-2004  15:43  5.0.2195.6896    933,136  ntdsa.dll   10-Feb-2004  15:43  5.0.2195.6890    392,464  samsrv.dll   10-Feb-2004  15:43  5.0.2195.6893    114,448  scecli.dll   10-Feb-2004  15:43  5.0.2195.6895    260,368  scesrv.dll   10-Feb-2004  15:43  5.0.2195.6824     48,912  w32time.dll   20-Sep-2003  16:32  5.0.2195.6824     57,104  w32tm.exe   10-Feb-2004  15:43  5.0.2195.6897    126,736  wldap32.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.
For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:
816915 New naming schema for Microsoft Windows hotfix packages
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the Standard Terminology That Is Used to Describe Microsoft Software Updates
Win2k win2000 hangs freezes crashes

Article ID: 836801 - Last Review: 10/26/2013 20:50:37 - Revision: 2.6

Microsoft Windows 2000 Server, Microsoft Windows 2000 Professional Edition, Microsoft Windows 2000 Advanced Server

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