Chkdsk tool incorrectly reports exFAT volume file system as corrupted in Windows 7 and Windows Server 2008 R2

Applies to: Windows Server 2008 R2 Service Pack 1Windows Server 2008 R2 DatacenterWindows Server 2008 R2 Enterprise

Symptoms


Consider the following scenario:
  • You have a drive that has a volume that is larger than 2 terabytes (TB) connected to a Windows 7-based or Windows Server 2008 R2-based computer.
  • The file system of the volume is in the Extended File Allocation Table (exFAT) format.
  • You run the Chkdsk.exe tool to verify the integrity of the file system.
In this scenario, the Chkdsk.exe tool incorrectly reports that there is a file system corruption. Additionally, the data on the volume becomes corrupted if you run the following command to fix errors on the disk:
Chkdsk /f 

Resolution


This hotfix is also available at Microsoft Update Catalog.

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 the problem described in this article. 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 website: 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.

Prerequisites

To apply this hotfix, you must be running Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 Service Pack 1 (SP1). For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

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

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

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

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
File nameX86_microsoft-windows-f..utilityexfatlibrary_31bf3856ad364e35_6.1.7601.22320_none_2c817e05b5abfd40.manifest
File versionNot applicable
File size2,151
Date (UTC)09-May-2013
Time (UTC)15:31
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameAmd64_microsoft-windows-f..utilityexfatlibrary_31bf3856ad364e35_6.1.7601.22320_none_88a019896e096e76.manifest
File versionNot applicable
File size2,153
Date (UTC)09-May-2013
Time (UTC)17:20
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File nameIa64_microsoft-windows-f..utilityexfatlibrary_31bf3856ad364e35_6.1.7601.22320_none_2c8321fbb5aa063c.manifest
File versionNot applicable
File size2,152
Date (UTC)09-May-2013
Time (UTC)15:26
PlatformNot applicable