Windows 7 and Windows Server 2008 R2 SP1

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    SummaryOriginating updateStatusLast updated
    Certain operations performed on a Cluster Shared Volume may fail
    Operations performed on files or folders on a CSV may fail with the error: STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5).
    KB4480970
    2019-01-08
    Mitigated
    2020-06-11
    14:06 PT

    Issue details

    January 2019

    Certain operations performed on a Cluster Shared Volume may fail

    StatusOriginating updateHistory
    Mitigated KB4480970
    2019-01-08
    Last updated: 2020-06-11, 14:06 PT
    Opened: 2019-01-08, 10:00 PT

    Certain operations, such as rename, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege.

    Affected platforms:

    • ​Client: Windows 8.1; Windows 7 SP1
    • ​Server: Windows Server 2012 R2; Windows Server 2012; Windows Server 2008 R2 SP1; Windows Server 2008 SP2

    Workaround: Do one of the following:

    • ​Perform the operation from a process that has administrator privilege.
    • ​Perform the operation from a node that doesn’t have CSV ownership.

    Next steps: Microsoft is working on a resolution and will provide an update in an upcoming release.


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