Symptoms

Consider the following scenario:

  • You install update 2919355 on a computer that is running Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2.

  • You have a device that uses the AVStream class (such as a Bluetooth, USB, or PCI device) connected to the computer.

  • The computer sleeps or wakes.

In this scenario, the computer freezes or crashes.

Cause

This issue occurs because of a race condition in the power management threads in the Ks.sys file.

Resolution

To resolve this issue, install the update that is described in this article.

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 system

Update

All supported x86-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows Server 2012 R2

Download Download the package now.


Note The update for Windows RT 8.1 can be obtained only from Windows Update.

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.

Prerequisites

To apply this update, you must be running Windows 8.1 or Windows Server 2012 R2.

Registry information

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

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update does not replace a previously released update.

The global version of this update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Ks.sys

6.3.9600.17119

218,112

08-May-2014

23:08

x86

For all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Ks.sys

6.3.9600.17119

295,424

08-May-2014

23:06

x64

For Windows RT 8.1

File name

File version

File size

Date

Time

Platform

Ks.sys

6.3.9600.17119

202,752

08-May-2014

23:02

Not applicable


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 the AVStream class, go to the following Microsoft website:

General information about the AVStream class 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 for Windows 8.1 and Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1

File property

Value

File name

X86_32b1a130c81624f3760ab029623c9c33_31bf3856ad364e35_6.3.9600.17119_none_48f97b5d3e958437.manifest

File version

Not applicable

File size

703

Date (UTC)

09-May-2014

Time (UTC)

10:46

File name

X86_microsoft-windows-kernelstreaming_31bf3856ad364e35_6.3.9600.17119_none_ec711d30b1408afa.manifest

File version

Not applicable

File size

6,075

Date (UTC)

09-May-2014

Time (UTC)

00:43

Additional files for all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2

File property

Value

File name

Amd64_076624a03afd8b55994e67041d738cce_31bf3856ad364e35_6.3.9600.17119_none_e68db7d9b5d497d0.manifest

File version

Not applicable

File size

707

Date (UTC)

09-May-2014

Time (UTC)

11:02

File name

Amd64_microsoft-windows-kernelstreaming_31bf3856ad364e35_6.3.9600.17119_none_488fb8b4699dfc30.manifest

File version

Not applicable

File size

6,079

Date (UTC)

09-May-2014

Time (UTC)

02:49

Additional files for Windows RT 8.1

File property

Value

File name

Arm_9957d6e5e9666609ede62196d64d09ae_31bf3856ad364e35_6.3.9600.17119_none_2b5208070702414a.manifest

File version

Not applicable

File size

703

Date (UTC)

09-May-2014

Time (UTC)

10:41

File name

Arm_microsoft-windows-kernelstreaming_31bf3856ad364e35_6.3.9600.17119_none_ec738f88b13da9c0.manifest

File version

Not applicable

File size

6,075

Date (UTC)

09-May-2014

Time (UTC)

00:14


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