Article ID: 312035
Article Last Modified on 10/27/2006
APPLIES TO
- Microsoft Windows 2000 Service Pack 2
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Service Pack 2
- Microsoft Windows NT Workstation 4.0 Developer Edition
This article was previously published under Q312035
SYMPTOMS
When a user account only has an LM hash and not a Windows NT hash, authentication may fail as it would when a bad password is used. This happens only when the user's password was changed so that only the LM hash was updated. This problem only exists on Windows 2000 Service Pack 2 (SP2) and Windows NT 4.0 post Service Pack 6 (SP6) SRP, or one of these operating systems with certain hotfixes in place for the Advapi32.dll file.
CAUSE
This problem can occur when LogonUser is called.
RESOLUTION
Windows 2000
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
The English version of this fix should have the following file attributes or later:
Date Time Version Size File name
--------------------------------------------------------
13-Nov-2001 11:48 5.0.2195.4622 356,112 Advapi32.dll
13-Nov-2001 11:48 5.0.2195.4571 82,704 Cmnquery.dll
13-Nov-2001 11:48 5.0.2195.4534 41,744 Dsfolder.dll
13-Nov-2001 11:48 5.0.2195.4534 156,944 Dsquery.dll
13-Nov-2001 11:48 5.0.2195.4574 110,352 Dsuiext.dll
Windows NT 4.0 SP6a Computers with the SRP Installed
The English version of this fix should have the following file attributes or later:
Date Time Version Size File name
-----------------------------------------------------------
05-Dec-2001 17:15 4.0.1381.7114 248,592 Advapi32.dll
NOTE: Due to file dependencies, this hotfix requires Microsoft Windows NT 4.0 Service Pack 6a.
WORKAROUND
To work around this problem, note that you can change the user's password from a Windows-based client to properly update the hashes.
STATUS
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 Windows 2000 Service Pack 3.
MORE INFORMATION
The hotfix that is described in this article updates the LogonUser function.
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:
265173 The Datacenter Program and Windows 2000 Datacenter Server Product
For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:
296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot
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
Additional query words:
Keywords: kbbug kbfix kbwin2000presp3fix kbqfe kbwin2000sp3fix kbenv kbsecurity kbhotfixserver KB312035
