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USB HID keyboard incorrectly reports the previous auto-repeat scan code in Windows 7 or in Windows Server 2008 R2

View products that this article applies to.

Symptoms

Consider the following scenario:
  • You install Windows 7 or Windows Server 2008 R2 on a computer that has multiple processors installed.
  • You use a USB Human Interface Device (HID) keyboard on the computer.
  • You press different keys on the keyboard.
In this scenario, the USB HID keyboard may incorrectly report the previous auto-repeat scan code.

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Cause

The issue occurs because of a race condition between the new auto-repeat scan code and the previous auto-repeat scan code. Sometimes, the HID keyboard filter driver (Kbdhid.sys) overwrites the data of the previous auto-repeat scan code with the data of new auto-repeat scan code.

When the race condition occurs, the driver does not stop the previous auto-repeat routine timer if the keyboard reports a new scan code. Therefore, you encounter the issue that is described in the "Symptoms" section.

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Resolution

Hotfix information

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

To apply this hotfix, you must be running one of the following operating systems:
  • Windows 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (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

To use the hotfix in this package, you do not have to make any changes to the registry.

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
  • 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:
    VersionProductMilestoneService branch
    6.1.760
    0.16xxx    		Windows 7 and Windows Server 2008 R2RTMGDR
    6.1.760
    0.21xxx    		Windows 7 and Windows Server 2008 R2RTMLDR
    6.1.760
    1.17xxx    		Windows 7 and Windows Server 2008 R2SP1GDR
    6.1.760
    1.21xxx    		Windows 7 and Windows Server 2008 R2SP1LDR
  • GDR service branches contain only those fixes that are widely released to address widespread, extremely important issues. LDR service branches contain hotfixes in addition to widely released fixes.
  • 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 Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely 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 7
File nameFile versionFile sizeDateTimePlatform
Kbdhid.sys6.1.7600.1688828,16017-Sep-201123:19x86
Kbdhid.sys6.1.7600.2105728,16017-Sep-201123:10x86
Kbdhid.sys6.1.7601.1769528,16017-Sep-201123:09x86
Kbdhid.sys6.1.7601.2182228,16018-Sep-201100:32x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Kbdhid.sys6.1.7600.1688833,28017-Sep-201123:44x64
Kbdhid.sys6.1.7600.2105733,28017-Sep-201123:41x64
Kbdhid.sys6.1.7601.1769533,28017-Sep-201123:47x64
Kbdhid.sys6.1.7601.2182233,28018-Sep-201100:39x64
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Kbdhid.sys6.1.7600.1688875,26417-Sep-201123:00IA-64
Kbdhid.sys6.1.7600.2105775,26417-Sep-201123:09IA-64
Kbdhid.sys6.1.7601.1769575,77617-Sep-201123:01IA-64
Kbdhid.sys6.1.7601.2182275,77617-Sep-201123:07IA-64

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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More Information

For more information about a similar issue in Windows Vista or in Windows Server 2008, click the following article number to view the article in the Microsoft Knowledge Base:

2497148 USB HID keyboard may incorrectly report the previous auto-repeat scan code in Windows Vista or in Windows Server 2008

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
File nameX86_keyboard.inf_31bf3856ad364e35_6.1.7600.16888_none_9727ce583a49bfb7.manifest
File versionNot Applicable
File size2,992
Date (UTC)18-Sep-2011
Time (UTC)05:58
File nameX86_keyboard.inf_31bf3856ad364e35_6.1.7600.21057_none_97d0b2bf53502599.manifest
File versionNot Applicable
File size2,992
Date (UTC)18-Sep-2011
Time (UTC)05:58
File nameX86_keyboard.inf_31bf3856ad364e35_6.1.7601.17695_none_99005a94377afb8f.manifest
File versionNot Applicable
File size2,992
Date (UTC)18-Sep-2011
Time (UTC)05:58
File nameX86_keyboard.inf_31bf3856ad364e35_6.1.7601.21822_none_99d2a7db506288e4.manifest
File versionNot Applicable
File size2,992
Date (UTC)18-Sep-2011
Time (UTC)05:58
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameAmd64_keyboard.inf_31bf3856ad364e35_6.1.7600.16888_none_f34669dbf2a730ed.manifest
File versionNot Applicable
File size2,996
Date (UTC)18-Sep-2011
Time (UTC)06:02
File nameAmd64_keyboard.inf_31bf3856ad364e35_6.1.7600.21057_none_f3ef4e430bad96cf.manifest
File versionNot Applicable
File size2,996
Date (UTC)18-Sep-2011
Time (UTC)06:02
File nameAmd64_keyboard.inf_31bf3856ad364e35_6.1.7601.17695_none_f51ef617efd86cc5.manifest
File versionNot Applicable
File size2,996
Date (UTC)18-Sep-2011
Time (UTC)06:02
File nameAmd64_keyboard.inf_31bf3856ad364e35_6.1.7601.21822_none_f5f1435f08bffa1a.manifest
File versionNot Applicable
File size2,996
Date (UTC)18-Sep-2011
Time (UTC)06:02
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File nameIa64_keyboard.inf_31bf3856ad364e35_6.1.7600.16888_none_9729724e3a47c8b3.manifest
File versionNot Applicable
File size2,994
Date (UTC)18-Sep-2011
Time (UTC)05:56
File nameIa64_keyboard.inf_31bf3856ad364e35_6.1.7600.21057_none_97d256b5534e2e95.manifest
File versionNot Applicable
File size2,994
Date (UTC)18-Sep-2011
Time (UTC)05:56
File nameIa64_keyboard.inf_31bf3856ad364e35_6.1.7601.17695_none_9901fe8a3779048b.manifest
File versionNot Applicable
File size2,994
Date (UTC)18-Sep-2011
Time (UTC)05:56
File nameIa64_keyboard.inf_31bf3856ad364e35_6.1.7601.21822_none_99d44bd1506091e0.manifest
File versionNot Applicable
File size2,994
Date (UTC)18-Sep-2011
Time (UTC)05:56

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Keywords: kb, kbautohotfix, kbqfe, kbhotfixserver, kbfix, kbsurveynew, kbexpertiseinter

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Article Info
Article ID : 2618535
Revision : 1
Created on : 1/7/2017
Published on : 10/12/2011
Exists online : False
Views : 505