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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

This article has been archived. It is offered "as is" and will no longer be updated.
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.
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.

Hotfix information

A supported hotfix is 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 software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


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 nameFile versionFile sizeDateTimePlatform
Package_1_for_kb947900~31bf3856ad364e35~x86~~ Applicable1,99919-Jan-200817:04Not Applicable
Package_2_for_kb947900~31bf3856ad364e35~x86~~ Applicable1,77619-Jan-200817:04Not Applicable
Update.mumNot Applicable2,11319-Jan-200817:04Not Applicable
X86_0f87e17aa0dbe0bc6186cbaed5653d9c_31bf3856ad364e35_6.0.6000.20757_none_9d753447ed8a0b4f.manifestNot Applicable69319-Jan-200817:04Not Applicable
X86_5ad8386b9fd5d93e1f3086447fe2e009_31bf3856ad364e35_6.0.6000.20757_none_de1078ee8417d4d0.manifestNot Applicable70519-Jan-200817:04Not Applicable
X86_microsoft-windows-offlinefiles-core_31bf3856ad364e35_6.0.6000.20757_none_9cbc997678009605.manifestNot Applicable14,33719-Jan-200804:51Not Applicable
X86_microsoft-windows-rdbss_31bf3856ad364e35_6.0.6000.20757_none_5849285b7d82bb83.manifestNot Applicable6,85619-Jan-200804:56Not Applicable
Microsoft-windows-offlinefiles-core-ppdlic.xrm-msNot Applicable3,02119-Jan-200804:06Not Applicable
Windows Vista, 64-bit versions
File nameFile versionFile sizeDateTimePlatform
Amd64_94416ea2daf81122b778a03fa3b93607_31bf3856ad364e35_6.0.6000.20757_none_e6f576fd2f473896.manifestNot Applicable69719-Jan-200817:04Not Applicable
Amd64_b5838ed52542ebb6fb4c5849c245099a_31bf3856ad364e35_6.0.6000.20757_none_da28f6d24f6f464e.manifestNot Applicable70919-Jan-200817:04Not Applicable
Amd64_microsoft-windows-offlinefiles-core_31bf3856ad364e35_6.0.6000.20757_none_f8db34fa305e073b.manifestNot Applicable14,36519-Jan-200804:51Not Applicable
Amd64_microsoft-windows-rdbss_31bf3856ad364e35_6.0.6000.20757_none_b467c3df35e02cb9.manifestNot Applicable7,11319-Jan-200804:57Not Applicable
Package_1_for_kb947900~31bf3856ad364e35~amd64~~ Applicable2,01119-Jan-200817:04Not Applicable
Package_2_for_kb947900~31bf3856ad364e35~amd64~~ Applicable1,78619-Jan-200817:04Not Applicable
Update.mumNot Applicable2,12719-Jan-200817:04Not Applicable
Microsoft-windows-offlinefiles-core-ppdlic.xrm-msNot Applicable3,02119-Jan-200804:08Not Applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More information
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 947900 - Last Review: 01/17/2015 14:06:00 - Revision: 3.0

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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