Source, and Fix, for Event 8194 VSS "access denied" querying for the IVssWriterCallback RRS feed

  • Question

  • Friends I encountered this error, pasted intact below, just a couple of days ago on a ia64 architecture HP system running Windows 7 Ultimate x64

    It appears that I may have a permissions issue somewhere but I do not know how to permanently root-cause-remedy it.  I should note that I do not have any routine backup service running on this particular mule, and no such animal was working at the time of the issue, so I'm baffled as to what invoked the process.  To anticipate a question you may have:  I did not use on this system a recent "registry cleanup" tool except that which Microsoft uses in a couple of automated packages:  one to do .NET cleanup, and another to resolve Uninstall/Install issues [this one succeeded... the .NET issue is another story].

    This system is a Homegroup owner/creator, but is not on a domain. It is essentially a lab mule that I use for tech work - other windows 7 clients fetch files from it via a bridged wifi AP. 

    Thank you in advance for any direction you have for me.

    Paste below


    Log Name:      Application
    Source:        VSS
    Date:          8/18/2012 6:36:49 PM
    Event ID:      8194
    Task Category: None
    Level:         Error
    Keywords:      Classic
    User:          N/A
    Computer:      BossHoss-PC
    Volume Shadow Copy Service error: Unexpected error querying for the IVssWriterCallback interface.  hr = 0x80070005, Access is denied.
    . This is often caused by incorrect security settings in either the writer or requestor process.

       Gathering Writer Data

       Writer Class Id: {e8132975-6f93-4464-a53e-
       Writer Name: System Writer
       Writer Instance ID: {a2af3afe-afb1-4346-bfd6-380873f59328}
    Event Xml:
    <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
        <Provider Name="VSS" />
        <EventID Qualifiers="0">8194</EventID>
        <TimeCreated SystemTime="2012-08-18T23:36:49.000000000Z" />
        <Security />
        <Data>0x80070005, Access is denied.

       Gathering Writer Data

       Writer Class Id: {e8132975-6f93-4464-a53e-1050253ae220}
       Writer Name: System Writer
       Writer Instance ID: {a2af3afe-afb1-4346-bfd6-380873f59328}</Data>

    Techwest Resources

    Tuesday, August 21, 2012 9:15 PM


  • Hi,

    Firstly, would you please let us know what backup application you do use. Is it the build-in one?

    Meanwhile, please refer to Security Considerations for Requesters for details.

    Hope this helps.

    Jeremy Wu

    TechNet Community Support

    • Marked as answer by Nicholas Li Thursday, August 30, 2012 3:54 AM
    Friday, August 24, 2012 2:56 AM

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