You experience problems when you try to mount VHD files by using the Vhdmount.exe tool after you apply update 948515 in Virtual Server 2005 R2 SP1

You experience problems when you try to mount VHD files by using the Vhdmount.exe tool after you apply update 948515 in Virtual Server 2005 R2 SP1

Article ID : 953482
Last Review : June 11, 2008
Revision : 1.0

SYMPTOMS

You apply update 948515 on a computer that is running Microsoft Virtual Server 2005 R2 Service Pack 1 (SP1). After you do this, you experience problems when you try to mount Virtual Hard Disk (VHD) files by using the Vhdmount.exe tool.

For example, if you run the vhdmount /m vhd file command or the vhdmount /p vhd file command, you may receive the following error message:

The specified operation could not be completed as an unexpected error has occurred.

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CAUSE

This issue occurs because the Vhdstor.sys driver is not successfully upgraded to version 1.1.623.0 after you install update 948515.

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RESOLUTION

To resolve this issue, you must manually upgrade the VHDMount driver. To do this, follow these steps:

1. Restart the computer.

Note You must do this before you update the driver because the Microsoft Virtual Server Storage Devices driver must be unloaded before it is updated.

2. Click StartStart, click Run, type devmgmt.msc, and then press ENTER.

User If you are prompted for an administrator password or for confirmation, type the password, or click Continue.

3. Right-click Microsoft Virtual Storage Device, and then click Update Driver Software.
4. Click Browse my computer for driver software, and then click Let me pick from a list of device drivers on my computer.
5. Click Have Disk, and then click Browse.
6. Locate the Virtual Server installation folder, and then open the VHDMount directory.
7. Select the Vhdstor.inf file, and then install the driver.

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MORE INFORMATION

For more information about update 948515, click the following article number to view the article in the Microsoft Knowledge Base:

948515 (/Feedback.aspx?kbNumber=948515/) Virtual Server 2005 R2 Service Pack 1 does not support Windows Server 2008, Windows Vista Service Pack 1, or Windows XP Service Pack 3

To download update 948515, visit the following Microsoft Web site:

http://www.microsoft.com/downloads/details.aspx?FamilyID=a79bcf9b-59f7-480b-a4b8-fb56f42e3348&DisplayLang=en (http://www.microsoft.com/downloads/details.aspx?FamilyID=a79bcf9b-59f7-480b-a4b8-fb56f42e3348&DisplayLang=en)

After you install update 948515, the driver version for the Microsoft Virtual Server Storage Device is still displayed in the Device Manager console as the earlier version of the driver (1.1.594.0) instead of version 1.1.623.0.

To view the driver version, follow these steps:

1. Click StartStart, click Run, type devmgmt.msc, and then press ENTER.

User If you are prompted for an administrator password or for confirmation, type the password, or click Continue.

2. Right-click Microsoft Virtual Storage Device, and then click Properties.
3. Click the Driver tab, and then examine the driver version.

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APPLIES TO
• Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)
• Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)
• Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)
• Windows Vista Service Pack 1
• Windows Vista Business
• Windows Vista Enterprise
• Windows Vista Ultimate
• Windows Vista Enterprise 64-bit Edition
• Windows Vista Ultimate 64-bit Edition
• Windows Vista Business 64-bit Edition
• Microsoft Virtual Server 2005 R2 Service Pack 1
• Microsoft Windows Small Business Server 2003 Premium Edition
• Windows Server 2008 Datacenter
• Windows Server 2008 Enterprise
• Windows Server 2008 Standard
• Microsoft Windows Server 2003 Service Pack 1
• Microsoft Windows Server 2003 Service Pack 2
• Microsoft Windows Server 2003 R2 Datacenter x64 Edition
• Microsoft Windows Server 2003 R2 Standard x64 Edition
• Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
• Microsoft Windows Server 2003, Datacenter x64 Edition
• Microsoft Windows Server 2003, Enterprise x64 Edition
• Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
• Microsoft Windows Server 2003, Standard x64 Edition
• Microsoft Windows Server 2003, Standard Edition (32-bit x86)

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Keywords: 
kbexpertiseinter kbtshoot KB953482

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Microsoft Knowledge Base Article

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