Microsoft KB Archive/930554

= A problem in the Virtual Machine Additions SCSI driver may cause Virtual Server 2005 R2 to stop responding (hang) =

Article ID: 930554

Article Last Modified on 11/15/2007

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APPLIES TO


 * Microsoft Virtual Server 2005 R2 Standard Edition
 * Microsoft Virtual Server 2005 R2 Enterprise Edition

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SYMPTOMS
Microsoft Virtual Server 2005 R2 may randomly stop responding (hang). When this problem occurs, you can still connect to the server by using the Ping.exe command-line utility.

You experience this problem if you have guest operating systems that use the Virtual Machine Additions SCSI driver (Msvmscsi.sys).



CAUSE
This problem occurs because of a problem in the Msvmscsi.sys driver. This driver does not handle check conditions correctly.



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

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required to apply this hotfix.

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 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.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information, 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

Keywords: kbbug kbfix kbqfe kbpubtypekc kbhotfixserver KB930554

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