Stop error when a Windows 7-based or Windows Server 2008 R2-based computer crashes randomly

Applies to: Windows Server 2008 R2 DatacenterWindows Server 2008 R2 EnterpriseWindows Server 2008 R2 for Itanium-Based Systems More

Symptoms


A computer that is running Windows 7 or Windows Server 2008 R2 crashes randomly. When this occurs, you receive one of the following Stop error messages:
STOP 0x0000001E KMODE_EXCEPTION_NOT_HANDLED
STOP 0x000000D1 DRIVER_IRQL_NOT_LESS_OR_EQUAL
STOP 0x000000C2 BAD_POOL_CALLER

The error message lists the tcpip.sys file as the source of the Stop error.

Note The issue generally occurs on a computer that deals with IPsec-related traffic.

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 website: 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 apply this hotfix, 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
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:
    VersionProductMilestoneService branch
    6.1.760
    0.21xxx
    Windows 7 and Windows Server 2008 R2RTMLDR
    6.1.760
    1.22xxx
    Windows 7 and Windows Server 2008 R2SP1LDR
  • GDR service branches contain only those fixes that are widely released to address widespread, critical 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 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
File nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.1.7600.21225187,24802-Jun-201204:50x86
Tcpip.sys6.1.7600.212251,303,40802-Jun-201204:50x86
Fwpkclnt.sys6.1.7601.22010187,76002-Jun-201204:57x86
Tcpip.sys6.1.7601.220101,306,48002-Jun-201204:58x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.1.7600.21225288,11202-Jun-201205:40x64
Tcpip.sys6.1.7600.212251,877,87202-Jun-201205:41x64
Fwpkclnt.sys6.1.7601.22010288,62404-Jun-201207:55x64
Tcpip.sys6.1.7601.220101,901,42404-Jun-201207:55x64
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.1.7600.21225482,67202-Jun-201204:28IA-64
Tcpip.sys6.1.7600.212253,805,55202-Jun-201204:29IA-64
Fwpkclnt.sys6.1.7601.22010483,18402-Jun-201204:23IA-64
Tcpip.sys6.1.7601.220103,812,20802-Jun-201204:23IA-64

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
File nameX86_a85e854f1e727d379faf7c0c1ab3c6aa_31bf3856ad364e35_6.1.7601.22010_none_4eebe5c3b78ca014.manifest
File versionNot applicable
File size702
Date (UTC)04-Jun-2012
Time (UTC)10:07
PlatformNot applicable
File nameX86_dcff05df5ff2f01bebf8becf101cf4ec_31bf3856ad364e35_6.1.7600.21225_none_5313087b54d1fbf3.manifest
File versionNot applicable
File size702
Date (UTC)04-Jun-2012
Time (UTC)10:07
PlatformNot applicable
File nameX86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7600.21225_none_b3beca34e0a6edde.manifest
File versionNot applicable
File size3,834
Date (UTC)02-Jun-2012
Time (UTC)05:14
PlatformNot applicable
File nameX86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7601.22010_none_b5aaf5b4ddc9bf26.manifest
File versionNot applicable
File size3,834
Date (UTC)02-Jun-2012
Time (UTC)05:29
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameIa64_5c7576a801262aed793768abd2a5fa54_31bf3856ad364e35_6.1.7600.21225_none_38ac8bb480496127.manifest
File versionNot applicable
File size704
Date (UTC)04-Jun-2012
Time (UTC)10:07
PlatformNot applicable
File nameIa64_dc1ab6d022963430ec67c1b2bd6374e1_31bf3856ad364e35_6.1.7601.22010_none_19593af79378f922.manifest
File versionNot applicable
File size704
Date (UTC)04-Jun-2012
Time (UTC)10:07
PlatformNot applicable
File nameIa64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7600.21225_none_b3c06e2ae0a4f6da.manifest
File versionNot applicable
File size3,836
Date (UTC)02-Jun-2012
Time (UTC)06:04
PlatformNot applicable
File nameIa64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7601.22010_none_b5ac99aaddc7c822.manifest
File versionNot applicable
File size3,836
Date (UTC)02-Jun-2012
Time (UTC)06:20
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File nameAmd64_56c69b2203d916559686d19c3fdbacb0_31bf3856ad364e35_6.1.7600.21225_none_6944d5ef6f3853fe.manifest
File versionNot applicable
File size706
Date (UTC)04-Jun-2012
Time (UTC)10:07
PlatformNot applicable
File nameAmd64_f1790cc4c0bf93695e5a50b407f8e757_31bf3856ad364e35_6.1.7601.22010_none_08e00187db1e26f8.manifest
File versionNot applicable
File size706
Date (UTC)04-Jun-2012
Time (UTC)10:07
PlatformNot applicable
File nameAmd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7600.21225_none_0fdd65b899045f14.manifest
File versionNot applicable
File size3,838
Date (UTC)02-Jun-2012
Time (UTC)06:11
PlatformNot applicable
File nameAmd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7601.22010_none_11c991389627305c.manifest
File versionNot applicable
File size3,838
Date (UTC)04-Jun-2012
Time (UTC)08:25
PlatformNot applicable