A computer that is running Windows Server 2008 R2 or Windows 7 stops responding randomly

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• SYMPTOMS
• CAUSE
• RESOLUTION
  • Hotfix information
    • Prerequisites
    • Restart requirement
    • Hotfix replacement information
    • File information
      • Windows 7 and Windows Server 2008 R2 file information notes
      • For all supported x86-based versions of Windows 7
      • For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
      • For all supported IA-64-based versions of Windows Server 2008 R2
• STATUS
• MORE INFORMATION
  • 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
      • Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
      • Additional files for all supported IA-64-based versions of Windows Server 2008 R2

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SYMPTOMS

A computer that is running Windows Server 2008 R2 or Windows 7 stops responding...

A computer that is running Windows Server 2008 R2 or Windows 7 stops responding randomly. Applications or services that are running on the computer stop working correctly. Additionally, you cannot log on to the computer by using the remote desktop connection utility.

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CAUSE

This issue occurs because of a deadlock condition between the Lsass.exe process,...

This issue occurs because of a deadlock condition between the Lsass.exe process, the Redirected Drive Buffering Subsystem (Rdbss.sys) driver, and the Winsock kernel.

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RESOLUTION

Hotfix information A supported hotfix is available from Microsoft. However, thi...

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 (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, your computer must be running Windows Server 2008 R2 or Windows 7.

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 English (United States) 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 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

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File name	File version	File size	Date	Time	Platform
Lmhosts.sam	Not applicable	3,683	10-Jun-2009	21:39	Not applicable
Lmhsvc.dll	6.1.7600.16385	18,432	14-Jul-2009	01:15	x86
Nrpsrv.dll	6.1.7600.20748	11,776	03-Jul-2010	05:08	x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

Collapse this tableExpand this table

File name	File version	File size	Date	Time	Platform
Lmhosts.sam	Not applicable	3,683	10-Jun-2009	21:00	Not applicable
Lmhsvc.dll	6.1.7600.16385	23,552	14-Jul-2009	01:41	x64
Nrpsrv.dll	6.1.7600.20748	15,360	03-Jul-2010	05:55	x64

For all supported IA-64-based versions of Windows Server 2008 R2

Collapse this tableExpand this table

File name	File version	File size	Date	Time	Platform
Lmhosts.sam	Not applicable	3,683	10-Jun-2009	21:06	Not applicable
Lmhsvc.dll	6.1.7600.16385	43,520	14-Jul-2009	01:46	IA-64
Nrpsrv.dll	6.1.7600.20748	34,304	03-Jul-2010	04:34	IA-64

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