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Article ID: 262890 - Last Review: February 28, 2014 - Revision: 3.6

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When a user's environment is mixed with Microsoft Windows NT 4.0 BDCs and Windows 2000 DCs while the LmCompatibilityLevel registry entry is in use for higher security, the home directory drive connection may not appear on the Windows 2000 Professional client computer. This problem may occur in the following environment:
  • The DC must be a Windows 2000-based DC, and the user's home directories must be located on a Windows NT 4.0-based BDC.
  • An LmCompatibilityLevel setting of three must exist on the client, and a minimum setting of three must exist on the servers.


This problem can occur if the client redirector code is passing two credentials, and the second one does not include the domain name.


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. The English version of this fix should have the following file attributes or later:
   Date        Time    Version         Size    File name   Platform
   10/27/2000  04:32p  5.0.2195.2590  331,536  Msgina.dll


To work around this problem, set the LmCompatibilityLevel on the Windows 2000-based client to two or less.


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


For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:
249149  ( ) Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

  • Microsoft Windows 2000 Server SP1
kbnosurvey kbarchive kbautohotfix kbhotfixserver kbqfe kbbug kbfix kbqfe kbwin2000presp2fix KB262890
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