This article describes an issue in which the throttling policy is ignored for Background Intelligent Transfer Service (BITS) traffic in Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2. A hotfix is available to fix this issue. Before you install this hotfix, see the Prerequisites section.

Symptoms

Assume that you use BITS to deploy updates. You set the throttling policy in BITS to restrict the network bandwidth. For multi-range transfers of files that are greater than 4 gigabytes (GB), BITS exceeds the throttling limit and consumes all network bandwidth.

Cause

This issue occurs because BITS miscalculates the next scheduled time at which it should check the transfer rate to impose the throttling. This causes the transfer to continue to be unbounded.

Hotfix information

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.


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

Before you apply this hotfix, install update 2919355 on Windows 8.1 or Windows Server 2012 R2.

Registry information

To use the hotfix in this package, 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.

Note The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed 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.

Windows RT 8.1

File name

File version

File size

Date

Time

Platform

Qmgr.dll

7.7.9600.18125

631,808

11-Nov-2015

15:08

Not applicable

Qmgr.mof

Not applicable

2,302

18-Jun-2013

15:02

Not applicable

x86 Windows 8.1

File name

File version

File size

Date

Time

Platform

Qmgr.dll

7.7.9600.18125

734,720

11-Nov-2015

14:57

x86

Qmgr.mof

Not applicable

2,302

18-Jun-2013

12:37

Not applicable

x64 Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Qmgr.dll

7.7.9600.18125

933,376

11-Nov-2015

15:13

x64

Qmgr.mof

Not applicable

2,302

18-Jun-2013

15:02

Not applicable

Qmgr.mof

Not applicable

2,302

18-Jun-2013

12:37

Not applicable


Windows RT 8.1

File property

Value

File name

Arm_396b35e2886d09dcb6556225dc36fd3c_31bf3856ad364e35_6.3.9600.18125_none_8f0aea891dda3572.manifest

File version

Not applicable

File size

699

Date (UTC)

11-Nov-2015

Time (UTC)

20:13

Platform

Not applicable

File name

Arm_microsoft-windows-bits-client_31bf3856ad364e35_6.3.9600.18125_none_b874aa4214d76a35.manifest

File version

Not applicable

File size

128,129

Date (UTC)

11-Nov-2015

Time (UTC)

15:56

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,602

Date (UTC)

11-Nov-2015

Time (UTC)

20:13

Platform

Not applicable

x86 Windows 8.1

File property

Value

File name

Update.mum

File version

Not applicable

File size

1,602

Date (UTC)

11-Nov-2015

Time (UTC)

20:13

Platform

Not applicable

File name

X86_e5e36bc0313c9323d05a7fdb20edd09d_31bf3856ad364e35_6.3.9600.18125_none_b73cb185ff39f005.manifest

File version

Not applicable

File size

699

Date (UTC)

11-Nov-2015

Time (UTC)

20:13

Platform

Not applicable

File name

X86_microsoft-windows-bits-client_31bf3856ad364e35_6.3.9600.18125_none_b87237ea14da4b6f.manifest

File version

Not applicable

File size

128,129

Date (UTC)

11-Nov-2015

Time (UTC)

16:27

Platform

Not applicable

x64 Windows 8.1 and Windows Server 2012 R2

File property

Value

File name

Amd64_2d1cc0cd8630a5499b5317f9504c925e_31bf3856ad364e35_6.3.9600.18125_none_edfa263e74327ed5.manifest

File version

Not applicable

File size

703

Date (UTC)

11-Nov-2015

Time (UTC)

20:13

Platform

Not applicable

File name

Amd64_dc473d19bca7e7c42144ee4af48edcd5_31bf3856ad364e35_6.3.9600.18125_none_22306d70cb8869fa.manifest

File version

Not applicable

File size

703

Date (UTC)

11-Nov-2015

Time (UTC)

20:13

Platform

Not applicable

File name

Amd64_microsoft-windows-bits-client_31bf3856ad364e35_6.3.9600.18125_none_1490d36dcd37bca5.manifest

File version

Not applicable

File size

128,135

Date (UTC)

11-Nov-2015

Time (UTC)

16:49

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,510

Date (UTC)

11-Nov-2015

Time (UTC)

20:13

Platform

Not applicable

File name

Wow64_microsoft-windows-bits-client_31bf3856ad364e35_6.3.9600.18125_none_1ee57dc001987ea0.manifest

File version

Not applicable

File size

60,740

Date (UTC)

11-Nov-2015

Time (UTC)

16:27

Platform

Not applicable


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