A program may stop responding, and event 50 and event 26 are logged, when the program tries to write data to a volume mount point on a Windows Server 2003-based computer (890352)

SYMPTOMS

When a program that is running on a Microsoft Windows Server 2003-based computer tries to write data to a volume mount point, your program may stop responding. The following events are logged to the System log:

Event message 1Event Type: Warning
Event Source: MRxSmb
Event ID: 50
Description:
{Delayed Write Failed} Windows was unable to save all the data for the file \Device\LanmanRedirector. The data has been lost. This error may be caused by a failure of your computer hardware or network connection. Please try to save this file elsewhere.

Data:
0000: 00040004 00560002 00000000 80040032
0010: 00000000 c000020c 00000000 00000000
0020: 00000000 00000000 c000020c

Event message 2Event Type: Information
Event Source: Application Popup
Event ID: 26
Description:
Application popup: Windows - Delayed Write Failed : Windows was unable to save all the data for the file \\ServerName\VolumeMountPointName\FileName. This data has been lost. This error may be cause by a failure on your computer hardware or network connection. Please try to save this file elsewhere.

CAUSE

This problem occurs when the program writes to a volume mount point that is located on a storage area network (SAN) that is connected by using a Universal Naming Convention (UNC) connection.

Note This problem does not occur when the program writes to a volume that is connected by using a drive letter mapping.

This problem occurs because data transfers from the client to the server do not progress. Subsequently, Windows disconnects from the volume mount point. Therefore, Windows cannot write to the volume mount point.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, 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

No prerequisites are required.

Restart requirement

You must restart your 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 item in Control Panel.Windows Server 2003, 32-bit versions

   Date         Time   Version       Size       File name
   ----------------------------------------------------------
   11-Jan-2005  10:43  5.2.3790.247  2,407,936  Ntkrnlmp.exe
   11-Jan-2005  10:06  5.2.3790.247  2,064,896  Ntkrnlpa.exe
   11-Jan-2005  10:06  5.2.3790.247  2,109,952  Ntkrpamp.exe
   11-Jan-2005  10:48  5.2.3790.247  2,208,768  Ntoskrnl.exe
   11-Jan-2005  10:44  5.2.3790.247    355,840  Srv.sys

Windows Server 2003, Enterprise Edition for Itanium-based Systems

   Date         Time   Version       Size       File name    
   ----------------------------------------------------------
   11-Jan-2005  10:34  5.2.3790.247  5,606,912  Ntkrnlmp.exe
   11-Jan-2005  10:34  5.2.3790.247    994,304  Srv.sys