Note This update replaces a previous update to improve resiliency that is described in KB 2848344.
In addition to the previously listed issues, the following issues are also resolved with this update.
Issue 1Assume that you have a Windows Server 2012-based failover cluster. A cluster that uses Cluster Shared Volumes (CSV) is moved or is toggled between directed access and redirected access when the performance monitor is running. In this situation, the performance counters no longer function.
Issue 2Consider the following scenario:
- You have the Hyper-V server role installed on Windows Server 2012-based failover cluster nodes.
- Virtual hard disk (VHD) files of the virtual machines are stored on a scale-out file share.
- The server is under a heavy load.
STOP: 0x000000C2 (parameter1, parameter2, parameter3, parameter4)
- The parameters in the Stop error message vary, depending on the configuration of the computer.
- Not all "Stop 0x000000C2" errors are caused by this issue.
Issue 3When you use the Windows thin provisioning feature on a Windows Server 2012-based computer, you experience the same I/O delays or I/O stalls that occur during the volume-unmounting process.
Note This issue occurs only on NTFS volumes.
Hotfix informationA 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.
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, submit a request to 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, go to 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.
PrerequisitesTo apply this hotfix, you must be running Windows Server 2012.
Registry informationTo use the hotfix in this package, you do not have to make any changes to the registry.
Restart requirementYou must restart the computer after you apply this hotfix.
Hotfix replacement informationThe hotfix that corresponds to KB 2870270 has been superseded with the hotfix KB 2878635, which contains all fixes that were previously included in KB 2870270. You should use the hotfix KB 2878635 to fix the issues described in KB 2870270. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
Article ID: 2870270 - Last Review: Jan 14, 2014 - Revision: 1