Receive-side scaling is unexpectedly disabled on a Windows Server 2008-based computer

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Article ID: 958015 - View products that this article applies to.
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SYMPTOMS

Consider the following scenario:
  • You have a computer that runs Windows Server 2008.
  • A network adapter that supports receive-side scaling (RSS) is installed on the computer.
  • You enable receive-side scaling on the network adapter.
In this scenario, receive-side scaling may be disabled unexpectedly. Additionally, some TCP connections may be reset.

If you use the netsh int tcp show global command to query for the receive-side scaling status, you receive output that indicates that receive-side scaling is disabled. This output resembles the following:
Querying active state...

TCP Global Parameters
----------------------------------------------
Receive-Side Scaling State          : disabled
Chimney Offload State               : enabled
Receive Window Auto-Tuning Level    : highlyrestricted
Add-On Congestion Control Provider  : none
ECN Capability                      : disabled
RFC 1323 Timestamps                 : disabled
Notes

Receive-side scaling helps improve network processing on computers that have multiple processors and high-speed network adapters. Therefore, this problem usually may be seen on computers that have 10-gigabit network adapters.

When this problem occurs, you lose the increase in network bandwidth that results from receive-side scaling.

RESOLUTION

Hotfix information

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

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 Web site:
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

No prerequisites are required.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Server 2008 file information notes

  • 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
    6.0.6000.16xxxWindows VistaRTMGDR
    6.0.6000.20xxxWindows VistaRTMLDR
    6.0.6001.18xxxWindows Vista SP1 and Windows Server 2008 SP1SP1GDR
    6.0.6001.22xxxWindows Vista SP1 and Windows Server 2008 SP1SP1LDR
  • Service Pack 1 is integrated into Windows Server 2008.
  • The MANIFEST files (.manifest) and MUM files (.mum) installed for each environment are listed separately. 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 (attributes not listed) are signed with a Microsoft digital signature.
For all supported 32-bit versions of Windows Server 2008
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Netio.sys6.0.6001.22302221,44805-Nov-200807:06x86
Bfe.dll6.0.6001.22302328,70404-Nov-200806:35x86
Fwpkclnt.sys6.0.6001.2230299,59205-Nov-200807:04x86
Fwpuclnt.dll6.0.6001.22302595,45604-Nov-200806:35x86
Ikeext.dll6.0.6001.22302438,27204-Nov-200806:35x86
Wfp.mofNot Applicable81418-Dec-200721:11Not Applicable
Wfp.tmfNot Applicable175,50804-Nov-200804:31Not Applicable
Tcpip.sys6.0.6001.22302890,12005-Nov-200807:10x86
For all supported 64-bit versions of Windows Server 2008
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Netio.sys6.0.6001.22302343,81605-Nov-200807:35x64
Bfe.dll6.0.6001.22302458,24004-Nov-200807:01x64
Fwpkclnt.sys6.0.6001.22302166,66405-Nov-200807:35x64
Fwpuclnt.dll6.0.6001.22302779,77604-Nov-200807:01x64
Ikeext.dll6.0.6001.22302454,65604-Nov-200807:01x64
Wfp.mofNot Applicable81418-Dec-200721:10Not Applicable
Wfp.tmfNot Applicable174,68004-Nov-200805:02Not Applicable
Tcpip.sys6.0.6001.223021,411,33605-Nov-200807:40x64
Fwpuclnt.dll6.0.6001.22302595,45604-Nov-200806:35x86
Wfp.mofNot Applicable81418-Dec-200721:11Not Applicable
For all supported Itanium-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Netio.sys6.0.6001.22302639,75205-Nov-200804:48IA-64
Bfe.dll6.0.6001.22302781,31204-Nov-200806:44IA-64
Fwpkclnt.sys6.0.6001.22302262,40805-Nov-200804:47IA-64
Fwpuclnt.dll6.0.6001.223021,122,30404-Nov-200806:46IA-64
Ikeext.dll6.0.6001.22302925,18404-Nov-200806:46IA-64
Wfp.mofNot Applicable81418-Dec-200721:11Not Applicable
Wfp.tmfNot Applicable174,77504-Nov-200804:52Not Applicable
Tcpip.sys6.0.6001.223022,917,12805-Nov-200804:58IA-64
Fwpuclnt.dll6.0.6001.22302595,45604-Nov-200806:35x86
Wfp.mofNot Applicable81418-Dec-200721:11Not 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 receive-side scaling, refer to the "RSS_Server2008.docx" document. To download this document, visit the following Microsoft Web site:
http://www.microsoft.com/whdc/device/network/NDIS_RSS.mspx
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 Server 2008

Additional files for all supported 32-bit versions of Windows Server 2008

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Additional files for all supported 64-bit versions of Windows Server 2008

Collapse this tableExpand this table
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Collapse this tableExpand this table
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Properties

Article ID: 958015 - Last Review: October 8, 2011 - Revision: 2.0
APPLIES TO
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 for Itanium-Based Systems
  • Windows Server 2008 Standard without Hyper-V
Keywords: 
kbautohotfix kbexpertiseinter kbbug kbfix kbqfe KB958015

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