Snapshot Failure resolution

Hi DVault Friend ,

Your Dvault Agent will stop backup when the operating VSS Writer will be not in stable condition. The Issue in the activity segment of Device will say-

Snapshot error -trying to resolve.

This error happens due to OS having VSS Services not running .

You can query the state of the VSS writers by using:

VSSADMIN LIST WRITERS

In regards to "reseting" VSS, have you tried stopping and starting the VSS service? You can use

SC STOP VSS
SC START VSS

VSS Writer	Service Name	Service Display Name
ASR Writer	VSS	Volume Shadow Copy
BITS Writer	BITS	Background Intelligent Transfer Service
COM+ REGDB Writer	VSS	Volume Shadow Copy
IIS Config Writer	AppHostSvc	Application Host Helper Service
IIS Metabase Writer	IISADMIN	IIS Admin Service
Microsoft Exchange Writer	MSExchangeIS	Microsoft Exchange Information Store
Microsoft Hyper-V VSS Writer	vmms	Hyper-V Virtual Machine Management
Registry Writer	VSS	Volume Shadow Copy
Shadow Copy Optimization Writer	VSS	Volume Shadow Copy
System Writer	CryptSvc	Cryptographic Services
WMI Writer	Winmgmt	Windows Management Instrumentation

Even if this doesn’t work then we have to take the dll registration needed for VSS

Usually this issue can be resolved by registering the dlls that are needed by the VSS service.

1. From command prompt:

Cd windows\system32

Net stop vss

Net stop swprv

regsvr32 ole32.dll

regsvr32 vss_ps.dll

Vssvc /Register

regsvr32 /i swprv.dll

regsvr32 /i eventcls.dll

regsvr32 es.dll

regsvr32 stdprov.dll

regsvr32 vssui.dll

regsvr32 msxml.dll

regsvr32 msxml3.dll

regsvr32 msxml4.dll

2. After completing the registration of the DLL’s open an command prompt and type: vssadmin list writers

3. You should see the writers listed.

4. if all witers is in stable state the snapshot failure will resolved and backup will start

5. Open agent console and do scan file now to backup files

I will be available for any further help.

Rajeev Ranjan

Digiswitch

9873444963