October 2014 servicing stack update for Windows 8.1 and Windows Server 2012 R2

Applies to: Windows 8.1 EnterpriseWindows 8.1 ProWindows 8.1

This article describes a servicing stack update for Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2.

We recommend that you install update 3021910 as it contains additional improvements that more comprehensively fixes the problem than this update.

About servicing stack

The servicing stack includes the files and resources that are required to service a Windows image. This includes the Package Manager executable, the required servicing libraries, and other resources. The servicing stack is included in all Windows installations.

Issues that are fixed in thie update

Issue 1
Consider the following scenario:
  • You enable a Windows feature.
  • You install an update for the feature. 
  • You optimize Windows either by using Windows Maintenance to perform the optimization automatically or by using the dism /startcomponentcleanup command to perform the optimization manually.
  • You disable the feature.
  • You try to install a later update for the feature.
In this scenario, the installation fails, and you receive an ERROR_INVALID_PARAMETER error message.
Issue 2
After you install a driver update from Windows Update for a device that uses third-party drivers, only some files for the device are updated.
Issue 3
Assume that an unanticipated power loss occurs while you are using the dism /startcomponentcleanup command to optimize Windows. After you restore power to the computer, some files become invalid. 
Issue 4
Assume that you install a servicing stack update that requires you to restart the computer. Before you restart the computer, you notice that multiple installation attempts for the servicing stack update are reported in the Windows Update history.


Update information

How to obtain this update

Windows Update
This update is available from Windows Update.
Microsoft Download Center
The following files are available for download from the Microsoft Download Center:
Operating systemUpdate
All supported x86-based versions of Windows 8.1Download Download the package now.
All supported x64-based versions of Windows 8.1Download Download the package now.
All supported x64-based versions of Windows Server 2012 R2Download Download the package now.
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.


To apply this update, you must be running Windows RT 8.1 or Windows 8.1.

Registry information

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

Restart requirement

You do not have to restart the computer after you apply this update.

Update replacement information

This update replaces a previously released update 2989647.

Removal information

After you install this servicing stack update, you cannot uninstall it to revert to an earlier version of servicing stack update.


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

File Information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). Be aware that dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time bias. The dates and times may also change when you perform certain operations on the files.

Note The files in the update package may be added to the %windir%\WinSxS\ folder instead of the %windir%\System32\ folder.