Conflicts between the Active Directory Client Extension and Windows 98 hotfix files

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This article was previously published under Q283261

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SYMPTOMS

If you install the Active Directory Client Extension (Dsclient.exe) for Windows 98 on a computer that is running Microsoft Windows 98 or Microsoft Windows 98 Second Edition, you may experience one or more of the following problems:

If you install the Active Directory Client Extension after you install certain hotfixes, you may lose the functionality that was originally provided by the hotfixes.
If you install certain hotfixes after you install the Active Directory Client Extension, the hotfix may not provide the expected, documented functionality. For example, the hotfix may not resolve the problem that it was designed to resolve.
If you install certain hotfixes after you install the Active Directory Client Extension, some functionality that was originally provided by the Active Directory Client Extension may be lost, but the functionality that is expected for the hotfix may be provided, such as resolving the problem that the hotfix was created to resolve.

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CAUSE

These problems may occur if any one of the following conditions is true:

The versions of certain system files that are installed by the Active Directory Client Extension provide additional functionality that is not provided in the versions of the files that are included in Windows 98 and in Windows 98 Second Edition.
The additional Active Directory Client Extension functionality that is provided by the system files that the Active Directory Client Extension installs is not included in the hotfix versions of the same files for Windows 98 and Windows 98 Second Edition.
When you install the Active Directory Client Extension, the same version of these system files is installed on Windows 98 and Windows 98 Second Edition. It does not install an operating-system-specific version of each of these files. Therefore, the Active Directory Client Extension versions of these files are later than any hotfix versions for Windows 98. This prevents Windows 98 hotfixes from being correctly installed by using safe version detection.
The Dsclient.exe does not perform safe version detection and may overwrite later (hotfix) versions of system files that have been installed.

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STATUS

Microsoft has confirmed that this is a problem in Active Directory Client Extension for Windows 98.

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MORE INFORMATION

For additional information about Active Directory Client Extension for Windows 98, click the following article number to view the article in the Microsoft Knowledge Base:

249841 (http://support.microsoft.com/kb/249841/ ) How Windows 95 and Windows 98 Directory Services Client uses Active Directory site information

When you install the Active Directory Client Extension on a computer that is running Windows 98, the following system files are automatically installed:

   Date       Time   Version    Size     File name    Operating system
   ----------------------------------------------------------------------------
   22-Oct-99  14:38  4.00.955    61,952  Msnet32.dll  Windows 95
   27-Oct-99  15:20  4.10.2225   70,144  Msnp32.dll   Windows 95
                                                      Windows 98
                                                      Windows 98 Second Edition
   06-Jun-97  17:09  4.20.6164  266,240  Msvcrt.dll   Windows 95
                                                      Windows 98
                                                      Windows 98 Second Edition
   06-Jun-97  18:09  4.10.1381   31,744  Nwapi32.dll  Windows 95
                                                      Windows 98
                                                      Windows 98 Second Edition
   29-Sep-99  18:11  4.10.2226   59,904  Secur32.dll  Windows 95
                                                      Windows 98
                                                      Windows 98 Second Edition
   19-Nov-99  15:58  4.10.2226   21,327  Dfs.vxd      Windows 95
                                                      Windows 98
                                                      Windows 98 Second Edition
   19-Aug-99  15:34  4.10.2223   17,719  Vnetsup.vxd  Windows 95
                                                      Windows 98
                                                      Windows 98 Second Edition
   27-Nov-99  15:18  4.10.2229  165,461  Vredir.vxd   Windows 95
                                                      Windows 98
                                                      Windows 98 Second Edition

For additional information about Directory Service Client version issues, click the following article number to view the article in the Microsoft Knowledge Base:

271496 (http://support.microsoft.com/kb/271496/ ) One unsuccessful logon attempt may trigger the default Windows NT lockout policy

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