Symptoms
Assume that you enable Data Deduplication on a virtual hard disk (VHD) on a Windows Server 2012-based computer. The computer crashes while you are merging VHD files. In this situation, data corruption occurs in the VHD files.
Resolution
Cumulative Update information
To resolve this issue, install the Windows 8 and Windows Server 2012 cumulative update 2822241. For more information about how to obtain this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2822241 Windows 8 and Windows Server 2012 cumulative update: April 2013
Status
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 about software update terminology, 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
