A System Center Virtual Machine Manager 2008 P2V fails with 'A device attached to the system is not functioning (0x8007001F)'

Article ID: 2628135 - View products that this article applies to.
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Symptoms

A System Center Virtual Machine Manager 2008 (SCVMM) Physical to Virtual (P2V) conversion fails when attempting to mount a .VHD file, reporting that a device attached to the system is not functioning. The hex code is highly correlated with this issue.

Error (12700)
VMM cannot complete the Hyper-V operation on the contoso10.com server because of the error: 'The system failed to mount 'C:\ClusterStorage\Volume3\NewSystem\C_2011-11-29T035848.vhd'. Error Code: A device attached to the system is not functioning.
 (A device attached to the system is not functioning (0x8007001F))

Cause

This can occur if antivirus realtime scanning places a lock on the file in the error message, making it impossible for SCVMM to continue operations.

Resolution

Modify the antivirus realtime scanning operations so that the file extensions and processes below are excluded. Perform this action on the SCVMM Server and all Hosts it manages.

To resolve this issue, configure the real-time scanning component within your antivirus software to exclude the following directories and files: 

• Default virtual machine configuration directory (C:\ProgramData\Microsoft\Windows\Hyper-V)
• Custom virtual machine configuration directories
• Default virtual hard disk drive directory (C:\Users\Public\Documents\Hyper-V\Virtual Hard Disks)
• Custom virtual hard disk drive directories
• Snapshot directories
• Vmms.exe (Note: May need to be configured as process exclusions within the antivirus software)
• Vmwp.exe (Note: May need to be configured as process exclusions within the antivirus software)
• All VHD, VHDX, AVHD, VSV and ISO files

Additionally, when you use Live Migration together with Cluster Shared Volumes on Windows Server 2008 R2, exclude the CSV path "C:\Clusterstorage" and all its subdirectories.

More Information

For more information on antivirus options with Microsoft products see this article.

Virus scanning recommendations for Enterprise computers that are running currently supported versions of Windows
http://support.microsoft.com/kb/822158

Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Properties

Article ID: 2628135 - Last Review: August 6, 2012 - Revision: 5.0
Applies to
  • Microsoft System Center Virtual Machine Manager 2008
  • Microsoft System Center Virtual Machine Manager 2008 R2 Workgroup Edition
  • Microsoft System Center Virtual Machine Manager 2008 Workgroup Edition
Keywords: 
KB2628135

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