If network problems occur when you download files from a network share to an offline folder on a Windows Vista-based computer, the files are corrupted

If network problems occur when you download files from a network share to an offline folder on a Windows Vista-based computer, the files are corrupted

Article ID : 947900
Last Review : March 14, 2008
Revision : 1.0
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SYMPTOMS

Consider the following scenario:

• On a Windows Vista-based computer, you download some files from a network share to an offline folder.
• During this process, some network problems occur, such as a loss of the wireless connection or network congestion.

In this scenario, the files that you download are corrupted.

The corrupted files have the same file size and the same metadata as the original files on the network share. However, when you perform a binary compare, you find the files do not match the original files.

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CAUSE

This problem occurs because of the mechanism of how the client-side caching (CSC) component handles the system-wide dummy page that the memory manager passes through the memory descriptor list (MDL). The CSC component illegally reads the data from an MDL that is not allocated by the CSC component. Therefore, when the MDL contains dummy pages, incorrect data is written to the hard disk.

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RESOLUTION

Hotfix information

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

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451 (http://go.microsoft.com/?linkid=6294451)

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

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

Prerequisites

No prerequisites are required.

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

To use this hotfix, you do not have to make any changes to the registry.

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 Vista, 32-bit versions
File name File version File size Date Time Platform
Package_1_for_kb947900~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 1,999 19-Jan-2008 17:04 Not Applicable
Package_2_for_kb947900~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 1,776 19-Jan-2008 17:04 Not Applicable
Update.mum Not Applicable 2,113 19-Jan-2008 17:04 Not Applicable
X86_0f87e17aa0dbe0bc6186cbaed5653d9c_31bf3856ad364e35_6.0.6000.20757_none_9d753447ed8a0b4f.manifest Not Applicable 693 19-Jan-2008 17:04 Not Applicable
X86_5ad8386b9fd5d93e1f3086447fe2e009_31bf3856ad364e35_6.0.6000.20757_none_de1078ee8417d4d0.manifest Not Applicable 705 19-Jan-2008 17:04 Not Applicable
X86_microsoft-windows-offlinefiles-core_31bf3856ad364e35_6.0.6000.20757_none_9cbc997678009605.manifest Not Applicable 14,337 19-Jan-2008 04:51 Not Applicable
X86_microsoft-windows-rdbss_31bf3856ad364e35_6.0.6000.20757_none_5849285b7d82bb83.manifest Not Applicable 6,856 19-Jan-2008 04:56 Not Applicable
Csc.sys 6.0.6000.20757 347,648 19-Jan-2008 02:02 x86
Cscmig.dll 6.0.6000.20757 105,984 19-Jan-2008 04:31 x86
Microsoft-windows-offlinefiles-core-ppdlic.xrm-ms Not Applicable 3,021 19-Jan-2008 04:06 Not Applicable
Rdbss.sys 6.0.6000.20757 222,720 19-Jan-2008 02:02 x86
Windows Vista, 64-bit versions
File name File version File size Date Time Platform
Amd64_94416ea2daf81122b778a03fa3b93607_31bf3856ad364e35_6.0.6000.20757_none_e6f576fd2f473896.manifest Not Applicable 697 19-Jan-2008 17:04 Not Applicable
Amd64_b5838ed52542ebb6fb4c5849c245099a_31bf3856ad364e35_6.0.6000.20757_none_da28f6d24f6f464e.manifest Not Applicable 709 19-Jan-2008 17:04 Not Applicable
Amd64_microsoft-windows-offlinefiles-core_31bf3856ad364e35_6.0.6000.20757_none_f8db34fa305e073b.manifest Not Applicable 14,365 19-Jan-2008 04:51 Not Applicable
Amd64_microsoft-windows-rdbss_31bf3856ad364e35_6.0.6000.20757_none_b467c3df35e02cb9.manifest Not Applicable 7,113 19-Jan-2008 04:57 Not Applicable
Package_1_for_kb947900~31bf3856ad364e35~amd64~~6.0.1.0.mum Not Applicable 2,011 19-Jan-2008 17:04 Not Applicable
Package_2_for_kb947900~31bf3856ad364e35~amd64~~6.0.1.0.mum Not Applicable 1,786 19-Jan-2008 17:04 Not Applicable
Update.mum Not Applicable 2,127 19-Jan-2008 17:04 Not Applicable
Csc.sys 6.0.6000.20757 456,704 19-Jan-2008 02:06 x64
Cscmig.dll 6.0.6000.20757 134,144 19-Jan-2008 04:32 x64
Microsoft-windows-offlinefiles-core-ppdlic.xrm-ms Not Applicable 3,021 19-Jan-2008 04:08 Not Applicable
Rdbss.sys 6.0.6000.20757 288,768 19-Jan-2008 02:06 x64

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STATUS

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

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MORE INFORMATION

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 (/Feedback.aspx?kbNumber=824684/) Description of the standard terminology that is used to describe Microsoft software updates

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APPLIES TO
• Windows Vista Enterprise 64-bit Edition
• Windows Vista Ultimate 64-bit Edition
• Windows Vista Enterprise
• Windows Vista Ultimate
• Windows Vista Business
• Windows Vista Business 64-bit Edition

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Keywords: 
kbfix kbexpertiseinter kbpubtypekc kbqfe kbhotfixserver KB947900

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