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VSS Errors Server 2012

Having an issue suddenly with a server backup.  I have rebooted, restarted services, registered dlls.  When I run vssadmin list writers it errors out and put 2 errors in the event log.  

Log Name:      Application
Source:        VSS
Date:          11/19/2014 11:22:42 AM
Event ID:      8193
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      host.*****.local
Description:
Volume Shadow Copy Service error: Unexpected error calling routine CoCreateInstance.  hr = 0x80040154, Class not registered
.

Operation:
   Instantiating VSS server
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="VSS" />
    <EventID Qualifiers="0">8193</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2014-11-19T16:22:42.000000000Z" />
    <EventRecordID>27509</EventRecordID>
    <Channel>Application</Channel>
    <Computer>avera-host.******.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>CoCreateInstance</Data>
    <Data>0x80040154, Class not registered
</Data>
    <Data>

Operation:
   Instantiating VSS server</Data>
    <Binary>2D20436F64653A2042554543584D4C4330303030343336332D2043616C6C3A2042554543584D4C4330303030343333322D205049443A202030303030363730302D205449443A202030303031303530302D20434D443A202076737361646D696E20206C697374207772697465727320202D20557365723A204E616D653A2041564552414F46465C636E652C205349443A532D312D352D32312D333233303632393630332D36353636363135322D313932343636333835302D3430313920202020</Binary>
  </EventData>
</Event>

AND

Log Name:      Application
Source:        VSS
Date:          11/19/2014 11:22:42 AM
Event ID:      22
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      host.******.local
Description:
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 {e579ab5f-1cc4-44b4-bed9-de0991ff0623} and Name IVssCoordinatorEx2 is [0x80040154, Class not registered
].

Operation:
   Instantiating VSS server
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="VSS" />
    <EventID Qualifiers="0">22</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2014-11-19T16:22:42.000000000Z" />
    <EventRecordID>27508</EventRecordID>
    <Channel>Application</Channel>
    <Computer>host.******.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>{e579ab5f-1cc4-44b4-bed9-de0991ff0623}</Data>
    <Data>IVssCoordinatorEx2</Data>
    <Data>0x80040154, Class not registered
</Data>
    <Data>

Operation:
   Instantiating VSS server</Data>
    <Binary>2D20436F64653A2042554543584D4C4330303030343335372D2043616C6C3A2042554543584D4C4330303030343333322D205049443A202030303030363730302D205449443A202030303031303530302D20434D443A202076737361646D696E20206C697374207772697465727320202D20557365723A204E616D653A2041564552414F46465C636E652C205349443A532D312D352D32312D333233303632393630332D36353636363135322D313932343636333835302D3430313920202020</Binary>
  </EventData>
</Event>
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A Karelin

Try to delete the writer from HKEY LOCAL MACHINE\SYSTEM\CURRENT CONTROL SET\SERVICES\VSS\PROVIDERS
and reboot.
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ASKER

already had tried that and it made no difference
What are you backup?
ASKER CERTIFIED SOLUTION
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cnesupport

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issue resolved itself after a few days