Microsoft KB Archive/895266

= Windows 2000 stops responding to SMB requests and to RPC requests when you try to encrypt a file on a Windows 2000-based domain controller =

Article ID: 895266

Article Last Modified on 3/22/2007

-

APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server

-





SYMPTOMS
When you try to encrypt a file on a Microsoft Windows 2000-based domain controller, Windows 2000 stops responding to server message block (SMB) requests from the client computer. Additionally, Windows 2000 stops responding to remote procedure call (RPC) requests from the client computer.

This symptom occurs if the following conditions are true:
 * You try to encrypt the file by using local computer policy or domain policy.
 * The Windows 2000-based domain controller has Encrypting File System (EFS) disabled.

Additionally, an error message that is similar to the following is logged in the System log: Event Type: Error

Event Source: Active Directory

Event Category: None

Event ID: 1188

User: N/A

Computer:

Description: A thread in the directory is waiting in a remote procedure call (RPC) to directory  performing a(n)   operation. The directory has attempted to cancel the call and recover thread id. If this condition persists, stop and restart that Windows Domain Controller.

Note When this problem occurs, you can still successfully ping the client computer from the Windows 2000-based domain controller.



CAUSE
This problem occurs because of a chain deadlock in the kernel-mode driver for the Distributed File System (DFS) client functionality.

Note The chain deadlock occurs between the Dfssvc.exe system process and the Lsass.exe system process.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

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.

Prerequisites
You must install Windows 2000 Service Pack 4 (SP4) before you apply this hotfix.

Restart requirement
You must restart the 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 file attributes) 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 08-Mar-2005 19:54  5.0.2195.7035  90,544  Mup.sys



STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the &quot;Applies to&quot; section.

