After you install the security update that is described in the KB828035 Security Update, you may experience one or more of the following symptoms on your Microsoft Windows NT 4.0-based computer:

•	System policies are no longer applied correctly.
•	You can no longer map a network drive.
•	Programs that retrieve user and group information are unsuccessful and generate "Out of resource" error messages.
•	Windows NT 4.0-based domain controllers may stop responding or crash.
•	The computer console may stop responding to user input.

Additionally, you may receive one or more of the following error messages on Windows NT 4.0 Workstation-based client computers:For additional information about the KB828035 Security Update, visit the following Microsoft Web site:

Back to the top

This problem may occur if both the following conditions are true:

•	A Windows NT 4.0-based domain controller has more than 2000 Windows NT 4.0-based clients connected.
•	You have defined system policies in the domain (by using an Ntconfig.pol file).

This problem occurs because the Windows NT 4.0 Workstation-based client computer does not close the SAMR named pipe that retrieves information about users and groups from a domain controller.

Back to the top

Hotfix Information

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Back to the top

Prerequisites

To install this hotfix, you must have Microsoft Windows NT 4.0 Service Pack 6a installed. For additional information about how to obtain Windows NT 4.0 Service Pack 6a, click the following article number to view the article in the Microsoft Knowledge Base:

Back to the top

Restart Requirement

You must restart your computer after you apply this hotfix.

Back to the top

Hotfix Replacement Information

This hotfix does not replace any other hotfixes.

Back to the top

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
   --------------------------------------------------------
   02-Oct-2003  14:28  4.0.1381.7236   39,184  Msgsvc.dll       
   14-Apr-2003  16:45  4.0.1381.7215   80,784  Mup.sys
   25-Oct-2003  16:31  4.0.1381.7239  256,272  Netapi32.dll     
   02-Oct-2003  14:28  4.0.1381.7236   60,688  Wkssvc.dll

Back to the top

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Back to the top

To verify that you have this problem, log on to a domain controller and view the resources that are in use. If the SAMR named pipe is in use by many workstations, you may have this problem. To view resources that are in use, follow these steps:

1.	Click Start, point to Programs, point to Administrative Tools (Common), and then click Server Manager.
2.	Click a domain controller in the Computer list.
3.	On the Computer menu, click Properties, and then click In Use.
4.	Under Path, note the number of \PIPE\samr items that appear.

Back to the top