Windows Server Backup Failing

[seank123]

trying to do a full backup of a Win 2008 64bit server. The backup fails with the following two error (both are VSS Event ID 8193) :

Volume Shadow Copy Service error: Unexpected error calling routine XML document is too long. hr = 0x80070018, The program issued a command but the command length is incorrect.
.

Operation:
Writer Exposing its Metadata

Context:
Execution Context: Requestor
Writer Instance ID: {B500E98D-852A-4FAC-866B-E775211F6DF1}
Writer Class Id: {E8132975-6F93-4464-A53E-1050253AE220}
Writer Name: System Writer

and

Volume Shadow Copy Service error: Unexpected error calling routine CreateVssExamineWriterMetadata. hr = 0x80042302, A Volume Shadow Copy Service component encountered an unexpected error.
Check the Application event log for more information.
.

Operation:
Writer Exposing its Metadata

Context:
Execution Context: Requestor
Writer Instance ID: {B500E98D-852A-4FAC-866B-E775211F6DF1}
Writer Class Id: {E8132975-6F93-4464-A53E-1050253AE220}
Writer Name: System Writer

Backup is to NAS device. I can backup a specific folder but not bare metal or system state.

Any ideas would be gratefully appreciated.

Many thanks

 

[diem86]

I have the same problem and in "vssadmin list writers" there isn't System Writer that i think is the cause.
Has you solved?
Thanks.