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ITsVISTA KB-Link: KB2457458

Windows backup fails when you back up data from the root folder of a mount point

Consider the following scenario:

  • You have a computer that is running one of the following operating systems:
    • Windows Server 2008 R2
    • Windows 7
    • Windows Server 2008
    • Windows Vista
  • You install an application that uses transactional logging on the computer, such as Microsoft SQL Server or Microsoft Exchange Server.
  • The log file of the application is saved on the root folder of a mount point.
  • You try to use the Windows backup engine to back up the application.

In this scenario, the backup operation fails, and you receive the following error message:

Log of files successfully backed up
‘path of Log-File’
Log of files for which backup failed
‘path of Log-File’
Failure in a Volume Shadow Copy Service operation.
ERROR – Volume Shadow Copy Service operation error [0x800423f0] the shadow copy set only contains only a subset of the volumes needed to correctly backup the selected components of the writer.

After you receive this error message, you run the Vssadmin list writers command. This results in the application writer being in the following state:

State: [8] Failed
Last error: Inconsistent shadow copy

There is a download that resolves this issue. See Hotfixes for details.
32-bit Download: Contact Microsoft
64-Bit Download: Contact Microsoft

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB2457458.

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