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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.
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.
You have to restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace any other previously released hotfixes.
To use this hotfix, you do not have to make any changes to the registry.
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.