VSS unexpected error querying IVssWriterCallback interface

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.

Operation :
Gathering writer data.

Context :
Writer Class ID: {e8132975-6f93-4464-a53e-1050253ae220}
Writer Name : System Writer
Writer Instance ID : {ad2004e9-895e-44ff-815a-903f2b9fbda1}

Log name : application
source : VSS
event id : 8194

Solution :
Solution for this error is found on microsoft technet event online help
http://technet.microsoft.com/en-us/library/dd364922(WS.10).aspx


See Also :
volume shadow copy service error unexpected error calling routine cocreateinstance