Article ID: 953482 - View products that this article applies to.
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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.
This issue occurs because the Vhdstor.sys driver is not successfully upgraded to version 1.1.623.0 after you install update 948515.
To resolve this issue, you must manually upgrade the VHDMount driver. To do this, follow these steps:
For more information about update 948515, click the following article number to view the article in the Microsoft Knowledge Base:
948515After 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.
(http://support.microsoft.com/kb/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 view the driver version, follow these steps:
Article ID: 953482 - Last Review: June 10, 2011 - Revision: 2.1
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