Beta Information

This article discusses a beta release of a Microsoft product. The information in this article is provided as-is and is subject to change without notice.No formal product support is available from Microsoft for this beta product. For information about how to obtain support for a beta release, see the documentation that is included with the beta product files, or check the Web location where you downloaded the release.

Symptoms

When you use applications that are based on legacy Transport Driver Interface (TDI) filter drivers, such as some antivirus programs, on a computer that is running Windows 7 Beta (Build 7000) or Windows Server 2008 R2 (Build 7000), the computer may crash during Server Message Block (SMB) connections when you are accessing network shares. The crash typically results in an error message that contains the following:

STOP 0x000000D1 (Parameter1, Parameter2, Parameter3, Parameter4)IRQL_NOT_LESS_OR_EQUAL tdx!TdxEventReceiveConnection.

Note You can use the winver.exe command to check the system build information.

Cause

This problem occurs because of an incorrect behavior in a system component that occurs when Server Message Block (SMB) connections go over Transport Driver Interface (TDI).

Resolution

This problem is fixed in the RTM version of Windows 7.

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 this specific problem. 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, submit a request to 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=supportNote 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

You must have Windows 7 Beta or Windows Server 2008 R2 installed to apply this hotfix.

Restart Requirement

You have to restart the computer after you apply this hotfix.

Hotfix Replacement Information

This hotfix does not replace a previously released hotfix.

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 7 Beta or Windows Server 2008 R2, x86 version

File name

File version

File size

Date

Time

Platform

Afd.sys

6.1.7000.4121

337,408

13-Feb-2009

03:32

x86

Windows 7 Beta or Windows Server 2008 R2, x64 version

File name

File version

File size

Date

Time

Platform

Afd.sys

6.1.7000.4121

495,616

13-Feb-2009

03:47

x64

Windows 7 Beta or Windows Server 2008 R2, ia64 version

File name

File version

File size

Date

Time

Platform

Afd.sys

6.1.7000.4121

1,118,208

13-Feb-2009

03:20

IA-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 the Transport Driver Interface (TDI) specification in Windows, visit the following Microsoft Web site:

http://msdn.microsoft.com/en-us/library/ms819740.aspxFor 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

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