VSS Writer Failed / How to Restart and Re-Register VSS Writers - Connect IT Community

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VSS Writer Failed / How to Restart and Re-Register VSS Writers - Connect IT Community | Kaseya

ISSUE

VSS writers can fail for various reasons, such as two or more resources trying to use the writer at the same time. When you run vssadmin list writers in a command prompt with admin rights, you might see one of the writers in a failed state, as shown below:

vssadmin list writers

Writer name: 'Microsoft Hyper-V VSS Writer'
   Writer Id: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
   Writer Instance Id: {c35d6ab0-9588-412f-ae7b-cdc37534501f}
   State: [8] Failed
   Last error: Retryable error

RESOLUTION

On the Windows server in question, open a command prompt with administrative rights and run the command
```
vssadmin info

vssadmin list writers
```
Check the writers that have failed.
You can use the list below to find the service that corresponds to the VSS Writer in question. Restart the corresponding windows services for the writers that are down.
Use the vssadmin list writers command again to show if the vss writer is now in a stable state.
If the vss writer remains in a failed state, you will need to re-register the writers.

VSS Writer	Service Name	Related Service To Restart
ASR Writer	VSS	Volume Shadow Copy
BITS Writer	BITS	Background Intelligent Transfer Service
Certificate Authority	CertSvc	Active Directory Certificate Services
COM+ REGDB Writer	VSS	Volume Shadow Copy
DFS Replication service writer	DFSR	DFS Replication
DHCP Jet Writer	DHCPServer	DHCP Server
FRS Writer	NtFrs	File Replication
FSRM writer	srmsvc	File Server Resource Manager
IIS Config Writer	AppHostSvc	Application Host Helper Service
IIS Metabase Writer	IISADMIN	IIS Admin Service
Microsoft Exchange Replica Writer	MSExchangeRepl	Microsoft Exchange Replication Service
Microsoft Exchange Writer	MSExchangeIS	Microsoft Exchange Information Store
Microsoft Hyper-V VSS Writer	vmms	Hyper-V Virtual Machine Management
MSMQ Writer (MSMQ)	MSMQ	Message Queuing
MSSearch Service Writer	WSearch	Windows Search
NPS VSS Writer	EventSystem	COM+ Event System
NTDS	NTDS	Active Directory Domain Services
OSearch VSS Writer	OSearch	Office SharePoint Server Search
OSearch14 VSS Writer	OSearch14	SharePoint Server Search 14
Registry Writer	VSS	Volume Shadow Copy
Shadow Copy Optimization Writer	VSS	Volume Shadow Copy
SMS Writer	SMS_SITE_VSS_WRITER	SMS_SITE_VSS_WRITER
SPSearch VSS Writer	SPSearch	Windows SharePoint Services Search
SPSearch4 VSS Writer	SPSearch4	SharePoint Foundation Search V4
SqlServerWriter	SQLWriter	SQL Server VSS Writer
System Writer	CryptSvc	Cryptographic Services
TermServLicensing	TermServLicensing	Remote Desktop Licensing
WDS VSS Writer	WDSServer	Windows Deployment Services Server
WIDWriter	WIDWriter	Windows Internal Database VSS Writer
WINS Jet Writer	WINS	Windows Internet Name Service (WINS)
WMI Writer	Winmgmt	Windows Management Instrumentation

NOTES

This KB contains some additional steps to follow from Technet and other related Microsoft VSS subsites.