BITS performance is slow after you configure the throttling policy on a computer that is running Windows 7 or Windows Server 2008 R2

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Article ID: 2732072 - View products that this article applies to.
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Symptoms

Assume that you use Background Intelligent Transfer Service (BITS) to deploy an application on a computer that is running Windows 7 or Windows Server 2008 R2. Additionally, assume that you configure the throttling policy in BITS to restrict the network bandwidth. In this scenario, the performance of BITS is slower than expected.

For example, assume that the overall network bandwidth is 244 KB per second. Additionally, assume that you configure the throttling policy in BITS to 32 KB per second. In this situation, the actual bandwidth that is used by BITS is less than 32 KB per second.

Cause

This issue occurs because a problem in the throttling policy causes BITS to estimate the network bandwidth incorrectly.

Resolution

This hotfix is also available at Microsoft Update Catalog.

Hotfix information

Important This hotfix has been re-released to address an issue in which the digital signature on files produced and signed by Microsoft will expire prematurely, as described in Microsoft Security Advisory 2749655.

A 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 the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

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, contact 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, visit the following Microsoft website:
http://support.microsoft.com/contactus/?ws=support
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.

Prerequisites

To apply this hotfix, you must be running Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1. For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

After the update is installed, to have us enable the update for you, go to the "Fix it for me" section. If you prefer to enable the update yourself, go to the "Let me fix it myself" section.

Fix it for me



To enable the update automatically, click the Fix it button or link. Then click Run in the File Download dialog box, and follow the steps in the Fix it wizard.


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assets fixit1
Fix this problem
Microsoft Fix it 55018
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assets fixit2


Notes
  • Install the hotfix in the "Hotfix download available" section at the top of this Knowledge Base article before you run this Fix it solution.
  • This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
  • If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD and then run it on the computer that has the problem.

Then, go to the "Did this fix the problem?" section.



Let me fix it myself

After the update is installed, change the following registry key to enable the update.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
  1. Open Registry Editor. To do this, click Start, type regedit in the Start Search box, and then press Enter.
  2. Locate and then click the following registry key:
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\BITS
  3. On the Edit menu, point to New, and then click DWORD (32 bit) Value.
  4. Type BITSRealisticEstimate, and then press Enter.
  5. On the Edit menu, click Modify.
  6. In the Value data box, type 1, and then click OK.
  7. Exit Registry Editor.

Did this fix the problem?

  • Check whether the problem is fixed. If the problem is fixed, you are finished with this section. If the problem is not fixed, you can contact support.
  • We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the "Fix it for me" blog or send us an email.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix 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.
Windows 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 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 7/Windows Server 2008 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:
    Collapse this tableExpand this table
    VersionProductMilestoneService branch
    6.1.760 1.22xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. 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 7
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File nameFile versionFile sizeDateTimePlatform
Qmgr.dll7.5.7601.22055586,24013-Jul-201209:33x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
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File nameFile versionFile sizeDateTimePlatform
Qmgr.dll7.5.7601.22055849,92013-Jul-201210:32x64
Qmgr.mofNot Applicable2,30212-Nov-201023:57Not Applicable
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Qmgr.dll7.5.7601.220551,773,56813-Jul-201209:43IA-64
Qmgr.mofNot Applicable2,30212-Nov-201023:57Not 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 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

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameUpdate.mum
File versionNot Applicable
File size1,643
Date (UTC)17-Sep-2012
Time (UTC)17:26
PlatformNot Applicable
File nameX86_e10ed435426d6180224ec6bd94242469_31bf3856ad364e35_6.1.7601.22055_none_38b310f8f4b2f2c6.manifest
File versionNot Applicable
File size709
Date (UTC)17-Sep-2012
Time (UTC)17:26
PlatformNot Applicable
File nameX86_f1a692a5c8f43a1936936b11d4a905f2_31bf3856ad364e35_6.1.7601.22055_none_e1c0e4e5996e5dba.manifest
File versionNot Applicable
File size699
Date (UTC)17-Sep-2012
Time (UTC)17:26
PlatformNot Applicable
File nameX86_microsoft-windows-bits-client_31bf3856ad364e35_6.1.7601.22055_none_25f76a1170f17833.manifest
File versionNot Applicable
File size113,723
Date (UTC)13-Jul-2012
Time (UTC)10:04
PlatformNot Applicable
File nameX86_microsoft-windows-bitsrealisticestimate_31bf3856ad364e35_6.1.7601.22055_none_50aeb97d1662ca1b.manifest
File versionNot Applicable
File size1,191
Date (UTC)13-Jul-2012
Time (UTC)09:55
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_54898915868a95ddb7483bd82c8fa8d9_31bf3856ad364e35_6.1.7601.22055_none_6a49ba5c7b3b6021.manifest
File versionNot Applicable
File size1,048
Date (UTC)17-Sep-2012
Time (UTC)17:26
PlatformNot Applicable
File nameAmd64_58ef2f4ad0658e99aeda5c05a60156ac_31bf3856ad364e35_6.1.7601.22055_none_f4dfe9eec3d4c0b6.manifest
File versionNot Applicable
File size713
Date (UTC)17-Sep-2012
Time (UTC)17:26
PlatformNot Applicable
File nameAmd64_microsoft-windows-bits-client_31bf3856ad364e35_6.1.7601.22055_none_82160595294ee969.manifest
File versionNot Applicable
File size113,729
Date (UTC)13-Jul-2012
Time (UTC)11:04
PlatformNot Applicable
File nameAmd64_microsoft-windows-bitsrealisticestimate_31bf3856ad364e35_6.1.7601.22055_none_accd5500cec03b51.manifest
File versionNot Applicable
File size1,193
Date (UTC)13-Jul-2012
Time (UTC)10:55
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size1,853
Date (UTC)17-Sep-2012
Time (UTC)17:26
PlatformNot Applicable
File nameWow64_microsoft-windows-bits-client_31bf3856ad364e35_6.1.7601.22055_none_8c6aafe75dafab64.manifest
File versionNot Applicable
File size53,420
Date (UTC)13-Jul-2012
Time (UTC)09:50
PlatformNot Applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_2559d10d6a801ded141269f55a453f40_31bf3856ad364e35_6.1.7601.22055_none_52f0eb13a003227f.manifest
File versionNot Applicable
File size1,046
Date (UTC)17-Sep-2012
Time (UTC)17:26
PlatformNot Applicable
File nameIa64_92776b4019572ddcb8c51684dd8a2b7f_31bf3856ad364e35_6.1.7601.22055_none_c1ca4d67e7bfa14b.manifest
File versionNot Applicable
File size711
Date (UTC)17-Sep-2012
Time (UTC)17:26
PlatformNot Applicable
File nameIa64_microsoft-windows-bits-client_31bf3856ad364e35_6.1.7601.22055_none_25f90e0770ef812f.manifest
File versionNot Applicable
File size113,726
Date (UTC)13-Jul-2012
Time (UTC)11:04
PlatformNot Applicable
File nameIa64_microsoft-windows-bitsrealisticestimate_31bf3856ad364e35_6.1.7601.22055_none_50b05d731660d317.manifest
File versionNot Applicable
File size1,192
Date (UTC)13-Jul-2012
Time (UTC)10:57
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size1,447
Date (UTC)17-Sep-2012
Time (UTC)17:26
PlatformNot Applicable
File nameWow64_microsoft-windows-bits-client_31bf3856ad364e35_6.1.7601.22055_none_8c6aafe75dafab64.manifest
File versionNot Applicable
File size53,420
Date (UTC)13-Jul-2012
Time (UTC)09:50
PlatformNot Applicable

Properties

Article ID: 2732072 - Last Review: May 24, 2013 - Revision: 4.0
Applies to
  • Windows 7 Enterprise
  • Windows 7 Professional
  • Windows 7 Ultimate
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Starter
  • Windows Server 2008 R2 Standard
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 for Itanium-Based Systems
  • Windows Server 2008 R2 Foundation
  • Windows Web Server 2008 R2
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbexpertiseadvanced kbsurveynew kbfixme kbmsifixme KB2732072

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