Creating or starting a Hyper-V virtual machine on Windows Server 2008 or Microsoft Hyper-V Server 2008 may fail with error: 0x800704C8

Article ID: 961804 – Last Review: January 7, 2009 – Revision: 1.2

Creating or starting a Hyper-V virtual machine on Windows Server 2008 or Microsoft Hyper-V Server 2008 may fail with error: 0x800704C8

Source: Microsoft Support

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Symptom

You may experience one of the following issues on a Windows Server 2008 system with the Hyper-V role installed or Microsoft Hyper-V Server 2008:

·         When you attempt to create or start a virtual machine, you receive one of the following errors:

·         The requested operation cannot be performed on a file with a user-mapped section open. (0x800704C8)

·         ‘VMName’ Microsoft Synthetic Ethernet Port (Instance ID
{7E0DA81A-A7B4-4DFD-869F-37002C36D816}): Failed to Power On with Error ‘The specified network resource or device is no longer available.’ (0x80070037).

·         The I/O operation has been aborted because of either a thread exit or an application request. (0x800703E3)

 

·         Virtual machines disappear from the Hyper-V Management Console

 

 

 

Cause

This issue can be caused by antivirus software that is installed in the parent partition and the real-time scanning component is configured to monitor the Hyper-V virtual machine files.

Resolution

To resolve this issue, configure the real-time scanning component within the 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 directory (C: Users Public Documents Hyper-V Virtual Hard Disks)

·         Custom virtual hard disk directories

·         Snapshot directories

·         Vmms.exe

·         Vmwp.exe

Notes:

·         If virtual machines are missing from the Hyper-V Management console, you must configure the antivirus exclusions, and then restart the Hyper-V Virtual Machine Management service.

·         If the error code was 0x800704C8, it is likely that the virtual machine configuration file was corrupted and the virtual machine may need to be re-created or restored from backup if restarting the Hyper-V Virtual Machine Management service does not resolve the issue.

 

 

 

More Information

The recommended configuration to protect your virtual machines is to install the antivirus software within the virtual machine.

For more information on best practices for Hyper-V security, please refer to the following article: http://technet.microsoft.com/en-us/library/cc974516.aspx (http://technet.microsoft.com/en-us/library/cc974516.aspx)

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APPLIES TO
  • Microsoft Hyper-V Server 2008
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Datacenter
Keywords: 
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