Volume Shadow Copy Service error

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    This morning, one of our servers (2008 R2) started the following errors:
    Event ID 22 and Event ID 12292

    I’ve tried to follow Microsoft “resolve” solutions but nothing worked.

    Any suggestions, starting point, anything ? Thank you. Alex


    error messages



    Event ID 22

    Volume Shadow Copy Service error: A critical component required by the Volume Shadow Copy service is not registered.
    This might happened if an error occurred during Windows setup or during installation of a Shadow Copy provider.
    The error returned from CoCreateInstance on class with CLSID {79079d5c-ef20-4952-b9fc-cfd443b38641} and Name SW_PROV is [0x80040154, Class not registered
    ].

    Operation:
    Obtain a callable interface for this provider
    List interfaces for all providers supporting this context
    Query Shadow Copies

    Context:
    Provider ID: {f782463b-33bb-4043-ad8d-60b728d26a6c}
    Class ID: {79079d5c-ef20-4952-b9fc-cfd443b38641}
    Snapshot Context: -1
    Snapshot Context: -1
    Execution Context: Coordinator

    Event ID 12292

    Volume Shadow Copy Service error: Error creating the Shadow Copy Provider COM class with CLSID {79079d5c-ef20-4952-b9fc-cfd443b38641} [0x80040154, Class not registered
    ].

    Operation:
    Obtain a callable interface for this provider
    List interfaces for all providers supporting this context
    Query Shadow Copies

    Context:
    Provider ID: {f782463b-33bb-4043-ad8d-60b728d26a6c}
    Class ID: {79079d5c-ef20-4952-b9fc-cfd443b38641}
    Snapshot Context: -1
    Snapshot Context: -1
    Execution Context: Coordinator

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