When I see this problem, I usually get success in fixing it by having the 
relevant system administrator restart the client's VSS service or reboot the 
client.

On 02 17, 2010, at 9:28 AM, emcuser wrote:

> I've been having intermittent backup issues using Networker 7.4.4 while 
> backing up the VSS System Boot saveset of a Windows 2003 SP2 32 bit server. 
> It fails with the following error message:
> 
> servername:VSS SYSTEM BOOT:\ 1 retry attempted
> servername:VSS SYSTEM BOOT:\ 5388:(pid 6304): Failure status of writer 
> Registry Writer - VSS_WS_FAILED_AT_PREPARE_SNAPSHOT
> servername:VSS SYSTEM BOOT:\ VSS SYSTEM BOOT: ERROR: VSS failed to process 
> snapshot, error=0x800423f4: The VSS writer operation failed because of an 
> error that might recur if another shadow copy is created. ** Says to look on 
> Event and Error help link.
> servername:VSS SYSTEM BOOT:\ 7162:(pid 6304): save of VSS SYSTEM BOOT:\ to 
> servername failed
> 
> So far the only fix is to reboot the server. Any help would be 
> appreciated.[/b]
> 
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