This article describes an issue that occurs under a heavy Quality of Service (QoS) load in Windows Server 2012 R2. A hotfix is available to fix this issue. The hotfix has a prerequisite.

Symptoms

When this issue occurs, you receive a Stop error that looks something like this:


STOP: 0x000000D1 (parameter1, parameter2, parameter3, parameter4)


Notes

  • This Stop error indicates a DRIVER_IRQL_NOT_LESS_OR_EQUAL issue.

  • The parameters in this Stop error message vary, depending on the configuration of the computer.

  • Not all "0x000000D1" Stop errors are caused by this issue.

Resolution

To fix this issue, we have released a hotfix. Even though this issue is observed only in Windows Server 2012 R2, the hotfix also applies to Windows 8.1 and Windows RT 8.1.

Important If you install a language pack after you install this hotfix, you must reinstall this hotfix. Therefore, we recommend that you install any language packs that you need before you install this hotfix. For more information, see Add language packs to Windows.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that's described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there's a "Hotfix Download Available" section at the top of this Knowledge Base article. If this section doesn't appear, submit a request to Microsoft Customer Service and Support to get 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 don't 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:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix Download Available" form displays the languages for which the hotfix is available. If you don't see your language, it's because a hotfix isn't available for that language.

Prerequisites

To apply this hotfix, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1 or Windows Server 2012 R2.

Registry information

To apply this hotfix, you don't have to make any changes to the registry.

Restart requirement

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

Hotfix replacement information

This hotfix doesn't 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.

References

See the terminology that Microsoft uses to describe 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.

Important Windows 8.1 hotfixes and Windows Server 2012 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8.1/Windows Server 2012 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.17 xxx

    Windows 8.1 and Windows Server 2012 R2

    RTM

    GDR

    6.3.960 0.18xxx

    Windows 8.1 and Windows Server 2012 R2

    RTM

    GDR

  • 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 aren't listed, are signed with a Microsoft digital signature.

x86 Windows 8.1

File name

File version

File size

Date

Time

Platform

Pacer.sys

6.3.9600.18087

122,368

09-Oct-2015

14:19

x86

Traffic.dll

6.3.9600.17415

35,328

29-Oct-2014

01:53

x86

Wshqos.dll

6.3.9600.17415

15,872

29-Oct-2014

01:05

x86

Windows RT 8.1

File name

File version

File size

Date

Time

Platform

Pacer.sys

6.3.9600.18087

122,368

09-Oct-2015

14:19

Not applicable

Traffic.dll

6.3.9600.16384

32,256

22-Aug-2013

03:06

Not applicable

Wshqos.dll

6.3.9600.16384

15,360

22-Aug-2013

02:19

Not applicable

x64 Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Pacer.sys

6.3.9600.18087

151,040

09-Oct-2015

14:35

x64

Traffic.dll

6.3.9600.17415

41,472

29-Oct-2014

02:36

x64

Wshqos.dll

6.3.9600.17415

18,944

29-Oct-2014

01:28

x64

Traffic.dll

6.3.9600.17415

35,328

29-Oct-2014

01:53

x86

Wshqos.dll

6.3.9600.17415

15,872

29-Oct-2014

01:05

x86


x86 Windows 8.1

File property

Value

File name

Update.mum

File version

Not applicable

File size

1,590

Date (UTC)

09-Oct-2015

Time (UTC)

21:36

Platform

Not applicable

File name

X86_08f8ab3ba5ab1b73d3d8434cfdc33961_31bf3856ad364e35_6.3.9600.18087_none_1da1d2ab541375f7.manifest

File version

Not applicable

File size

691

Date (UTC)

09-Oct-2015

Time (UTC)

21:36

Platform

Not applicable

File name

X86_microsoft-windows-qos_31bf3856ad364e35_6.3.9600.18087_none_42edfab3733bbef3.manifest

File version

Not applicable

File size

54,168

Date (UTC)

09-Oct-2015

Time (UTC)

21:40

Platform

Not applicable

Windows RT 8.1

File property

Value

File name

Arm_efebb98b65249f352a4ef63028e85386_31bf3856ad364e35_6.3.9600.18087_none_e1c520930004301a.manifest

File version

Not applicable

File size

691

Date (UTC)

09-Oct-2015

Time (UTC)

21:36

Platform

Not applicable

File name

Arm_microsoft-windows-qos_31bf3856ad364e35_6.3.9600.18087_none_42f06d0b7338ddb9.manifest

File version

Not applicable

File size

54,168

Date (UTC)

09-Oct-2015

Time (UTC)

21:36

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,590

Date (UTC)

09-Oct-2015

Time (UTC)

21:36

Platform

Not applicable

x64 Windows 8.1 and Windows Server 2012 R2

File property

Value

File name

Amd64_390d8ffdc75f27cdac3d0281b0ff993f_31bf3856ad364e35_6.3.9600.18087_none_bfaa86fa609dc591.manifest

File version

Not applicable

File size

695

Date (UTC)

09-Oct-2015

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_44a22677d27b7b36f00e5272f5bb8952_31bf3856ad364e35_6.3.9600.18087_none_6753d13f8a7d7101.manifest

File version

Not applicable

File size

695

Date (UTC)

09-Oct-2015

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_microsoft-windows-qos_31bf3856ad364e35_6.3.9600.18087_none_9f0c96372b993029.manifest

File version

Not applicable

File size

54,172

Date (UTC)

09-Oct-2015

Time (UTC)

21:43

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,721

Date (UTC)

09-Oct-2015

Time (UTC)

21:36

Platform

Not applicable

File name

Wow64_microsoft-windows-qos_31bf3856ad364e35_6.3.9600.18087_none_a96140895ff9f224.manifest

File version

Not applicable

File size

51,132

Date (UTC)

09-Oct-2015

Time (UTC)

21:43

Platform

Not applicable


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