Consider the following scenario:

•	Some virtual machines in a Microsoft Virtual Server 2005 R2 environment are running Windows Vista guest operating systems.
•	The latest version of Virtual Machine Additions is installed on these virtual machines.
•	You restart multiple Windows Vista guest operating systems at the same time.

In this scenario, the Windows Vista guest operating systems restart unexpectedly after the following Stop error message is displayed:Notes

•	The parameters in this Stop error message vary, depending on the computer's configuration.
•	Not all "Stop 0x000000D1" errors are caused by this problem.

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After you apply this hotfix, Virtual Machine Additions is upgraded from build 13.813 to build 13.814.

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Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

To apply this hotfix, you must be running Virtual Server 2005 R2 with Service Pack 1.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

Post-installation instructions

After you apply this hotfix, you must remove Virtual Machine Additions and then reinstall Virtual Machine Additions for each virtual machine that has this problem. Then, restart the guest operating systems on which you reinstalled Virtual Machine Additions.

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.

Virtual Server 2005 R2 with Service Pack 1, x86-based versions

File name	File version	File size	Date	Time	Platform
Vssrvc.exe	1.1.605.0	3,373,088	18-October -2007	‏‎6:09	x86

Virtual Server 2005 R2 with Service Pack 1, x64-based versions

File name	File version	File size	Date	Time	Platform
Vssrvc.exe	1.1.605.0	6,018,592	18-October -2007	‏‎6:11	x64

Guest operating system

File name	File version	File size	Date	Time	Platform
Vpcshexg.dll	13.814	82,992	16-Oct-‎2007	12‎:38	x86
Mrxvpc.sys	13.814	102,448	16-Oct-‎2007	12‎:38	x86
Mrxvpcnp.dll	13.814	70,704	16-Oct-‎2007	12‎:38	x86
Vpcmap.exe	13.814	78,896	16-Oct-‎2007	12‎:38	x86
Vmusrvc.exe	13.814	144,432	16-Oct-‎2007	12‎:41	x86
Vmsrvc.exe	13.814	111,664	16-Oct-‎2007	12‎:41	x86
Vmsrvc.sys	13.814	65,072	16-Oct-‎2007	12‎:41	x86
Vmsrvc.dll	13.814	78,896	16-Oct-‎2007	12‎:41	x86

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To work around this problem, remove Virtual Machine Additions on the virtual machines.

Note Some performance issues, display issues, or mouse issues may occur if Virtual Machine Additions is removed or disabled.

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

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For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

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